New Zealand has a weird fucked-up drug culture, it has a lot of charm (having travelled a bunch, I quite like the way that things work here, but some aspects irritate the shit out of me). The main distinctive thing about New Zealand is the lack of organisation- yes, we have shittons of gangs, but gangs are as much a social institution as they are directly related to the drug-trade (gangs would continue to exist in NZ even if drugs were legalised because they perform a social function). I have no involvement with any gangs, a great deal of drug users here genuinely don't. This means that what you pay and what you get varies hugely depending on who you know.
Cannabis is the most common drug and is the drug that sustains the whole drug scene, most dealers sell pot even if they sell other things too (or primarily)- cannabis is like a business card and virtually expected. The smallest amount you can buy is a tinny/foil which is nominally 1g but varies between 0.7-1.3g depending on who you're getting it from. Then you have 50s (3-3.5g), quarters, halfs, pounds then kilos. I have no idea why there is the mixture of imperial and metric measurement. Most weed in NZ is grown outdoors, this varies greatly in quality from the worst ditchweed you've laid eyes on (with 300+ seeds to an ounce) to extremely nice 'name-strain' cannabis (AK-47, white rhino, blueberry, bubblegum etc) that has been grown outdoors. Huge areas of NZ are closely associated with Cannabis cultivation- Nelson & Golden Bay, Taranaki, Northland, Hawkesbay, Whanganui, the Uruweras all produce huge amounts of weed every year. All of it is consumed domesically, so consequently cannabis is both common and cheap by international standards.
Indoor is sporadically available, it depends who you know, but you do generally pay a premium for it, particularly if it's good stuff. Oil is also made, but interestingly is much more common in the proviences where cannabis is grown than in the cities. Most of it is made with kerosene or isopropyl alcohol and is dark to light green. Occasionally you'll come across nice golden oil. All of it is dirt cheap. Hash is completely non-existant, no one makes it, no one sells it, no one smokes it.
Heroin is also completely unavailable, but there is a small closeknit heroin community that buys morphine sulphate tablets (misties, MS-contin, M-Eslon, Sevredol seem to be most common) and 'turns' (acetates) them with
'double/dub/AA' (Acetic Anhydride) to create homebake heroin. Cooking itself is an art form as much as a science (particualrly considering the crude conditions it is done in) and the bake can vary from a black liquid that causes a strong histamine reaction (indicative of morphine) to a amber-golden bake that knocks the socks off eveything I've had bar stuff in Cambodia- a guy I know came back from london with a 1/2g a day habit, this translated to 40mg a day good homebake.
Poppies are commonly consumed, with some people going as far as stealing them from gardens (Oh the stories I could tell you about dumbass junkies sneaking into peoples gardens) or growing patches in secret as you would cannabis. This is more common in the south. We have our own version of polish heroin/kompot, which doesn't really have a name, but is acetated poppy-extract (generally from poppy heads reduced to a gum then washed/filtered with some basic solvents, acetated with acetic anhydride and often injected)- I met a guy who grew a huge patch of over 1000 poppies and he turned his house into a miniature heroin factory to free him from dealers for like 4 or 5 months, was quite a sight to behold- this smacked out dude attending to bubbling pots, adjusting fans, shaking bottles of extract, responding to the ding of a toaster oven letting him know his smack was done while mumbling about how much he hated the dude he use to buy pills off.
Methadone is commonly abused here too- our MMT methadone has no addatives, it's just water + methadone- so a lot of people shoot it up because they can and because it's easier that homebake. The methadone programme is clogged up with people who are perfect patients because they're less methadone patients more free-wheeling-junkie-methadone-dealers who sell their methadone to buy morphine. A lot of people maintain higher-than-they-need doses (taper privately) so they have a small excess to sell so they can buy homebake.
Fancy opiates don't really exist- we just have codeine, tramadol, pethedine, methadone and morphine. Morphine is really the lynchpin of pain management in NZ, methadone is also fairly commonly prescribed for pain. However Oxycodone (oxynorm) have recently become available, they are the most pricey opiate on the market and are inevitably shot up (damn junkies with their needle obsessions).
If you believe the media shitstorm, New Zealand has a huge amount of methamphetamine users. I don't know, maybe we do, I can't say I've noticed that much. Sure a lot of people use it, but not that many people take it very often. Anyway, methamphetamine is commonly called 'P' here in the media, but is generally called 'crack' by users. I don't know why. Crack is sold by the point/dollar bag which is nominally 100mg, but is generally closer to 50mg and grams, which fluctuate in price much more. Meth dealers are renouned for not owning scales. Most meth is 'dry' and to a greater or lesser degree is cut while occasionally you'll come across 'wet' meth that is, indeed, kinda wet but tends to be stronger and is favoured by IV users. Most people smoke meth, a few people snort it, an increasing amount IV it.
Along side meth, ritalin is also a fairly commonly used drug that sells for ridiculous prices per pill. Most people snort, but once again IV use is popular. Dexamphetamine are less common than ritalin, but highly prized by both meth users and stimulant fiends in general. Amphetamine doesn't really exist, although 'speed' (meth, typically cut 1:10) is available for relatively cheap (although you'd be be better off just buying the meth and DIY-ing it).
Esctasy, E, eckies or most commonly 'pills' (which is probably the only appropriate name) are extremely popular and extremely shit. Command a price far beyond their worth- piperazines, mephedrone, methylone and occasionally MDPV/Ritalin or even really shitty meth to the fore! MDMA can also be bought as a powder, this generally is either flat out mephedrone or methylone/mdpv, or it is quite heavily cut MDMA. Powder/caps can generally be bought for slightly less than pressed pills, despite the quality generally being better than that of the pressed pills. It's a weird world. Mephedrone has had a fairly terrible effect on the NZ club scene, there has been a similiar development of 'meph-fiends' (much like Britain) who develop this bizarre lifestyle of massive nosebleeds, powder caked nostrils, a party-all-the-time attitude and waaaaaaay too much techno music while mercilessly hunting down and curbing the few remaining braincells they have with liquor all while retaining this innocent 'I'm only taking soft drugs teeheehee' mentality.
People in NZ, in general, think that Mephedrone IS MDMA, if they take MDMA they complain about the lack of energy/speediness. If I had a dollar (or got to punch a dude) everytime someone mentioned the 'distinctive aroma of ass' that MDMA has I'd be a happy guy.
Psychedelics are rare, expensive and on the whole pretty shit compared to international standards- but that's not to say that it's not totally worthwhile, if you understand the situation that you're in. DOX tabs are fairly fucking common, DOC/DOB seem to the most commonly encountered. That said there is LSD here if you know the right folk. Which may well be downright impossible for someone who wasn't born here. Acid isn't commonly taken as a psychedelic, it's more a club-drug thing, people like the 'trippy visuals' and appreciate the ability to drink fucking heaps and not feel it. Research chemicals do crop up, mainly 2C-B/E/I, but they're not really that well known by most drug users. Shrooms are quite popular here and grow abundantly- there are many varieties including a number of native species, the most impressive being the 'Wellington Blue Meanie'- a pale blue pouch mushroom that looks like an alien egg or an alien brain/skull when cut in half.
Ketamine is sporadically available, it's much more common in Auckland than anywhere else in the country. It's mainly a club drug, however it did create quite a few serious cases of addiction (including a number of friends of mine). It's quite uncommon and is one of those drugs that really 'comes and goes' with no explination. DXM has quite a large number of users, particuarly outside of the teenage-social-retard category, although most people despise it. GHB has a weird popularity in NZ that has never really died down, it's generally sold as 'fantasy' (by the upfront) and as 'liquid E' (by the cunts), generally sold by the ml- 1-2ml for a good night for a average sized dude- I have no idea about the actual dosages though. Quite closely connected with the gay scene, as well as bodybuilders (and, ironically, a group of gay bodybuilders have been repeatedly arrested in major busts involving the importation of GHB).
Benzos aren't that common and aren't really abused a great deal. Their greatest value seems to lie with methheads who want to sleep. However Diazepam is the benzo of choice here and most other benzos are cheaper than diazepam/you pay a premium for diazepam, particularly the large 20mg pills vs the cocktease 1mg pills. Zopiclone is pretty fucking common, there are a lot of funny stories to be heard about zolpidem's meaner cousin.
I'm sure there are other things, but that's a brief outline.