When I was 19 I was on vacation in my home country, and in pharmacies there you can buy benzos, any amount you want, without prescription (opiates too if you bribe the pharmacist). I had only experience with opiates, weed, meth, never tried any benzos before, so I thought, why not let's try it.
So I researched what's interesting, made a list and went to the pharmacy to buy about 3 packs of 2mg Xanax (60 pills), 3 packs of 2mg Lorazepam (60 pills), 5 packs of 30 mg Diazepam (30 per pack here, so 150) and random lower amounts of Bromazepam, Temazepam and Oxazepam. You'd cringe at the amount, but one pack would cost around $2 if you change it to US dollars, so it's really, really cheap.
Well, back home (we have a house there), I started I think on Xanax as I heard they are the best, half hour later felt nothing. Never tried benzos so didnt watch for the subtle relaxation, expected more something weed-like. Tried Lorazepam, Diazepam, and went through one pill of everything. By then, in hindsight, I was pretty much completely hazed, but didn't realize it and kept on taking.
We were there 3 more days then went back home by car (was not driving ofc). Luckily, my mother is quite the relaxed person, because I can't remember one bit after starting to take the pills until about 2 days when we where back. One of these days, the last one, I was even at work. I have no idea how i get there. My colleagues later told me I was not very talkative and worked rather slow, but they suspected I hadnt slept much on the way back from vacation.
Well, 5 whole days of a memory black hole. I took ALOT of pills, the amount I still had when I was clear again was, well, laughable compared to the enormous stash before.
My equivalence dose in diazepam to everything must have been somewhere well into 3 digits. Luckily I'm quite big and heavy and generally can take a lot of drug punishment before something gets me.
Since then, I always have some benzos around for when I run out of my prescription pain meds early or when my doc happens to be on vacation, but I'm not taking them for fun again.