I agree with some of the other replies that if you are going to stop, now would be the time. ~80mg a day is a really low dose, and quitting cold turkey would be your best option IMO. I have to take in the 200-300mg range to get high and sometimes I don't even get high, and I often have to quit cold turkey for like 3 days just to get my tolerance down a bit so I can get high again.
Actually I did about 240mg last night, and that was the last of my money so I guess I'll be cold turkeying starting today. No withdrawals yet, but I snorted it late last night so I still prolly have a bit in my system.
At 80mg a day I would never have to quit because that would be quite cheap to maintain, but once you are spending hundreds of dollars a day, and sometimes you need that money for other things, that's when you start getting into trouble.
I remember when I would snort 2 roxy 30's and nod the hell out, and all my friends would be like DAMN MAN I'VE NEVER EVEN DONE A WHOLE ONE YOU ARE CRAZY, and I never would have beleived that I would be snorting hundreds of mg's a day and not even nodding out at all.
Just quit now man. Cold turkey IMO