I have sold nudes to a few guys from tinder in the past, usually for around $20 per pic, but haven’t in over a year.

A Facebook friend of mine (an acquaintance that I talked and flirted with at a couple concerts many years ago) messaged me recently asking if I would ever consider selling nudes to him. I said yes and we got to discussing what kind of photos he’s interested in, and then asked how I felt about $5/photo... which I definitely feel like is too low if I was getting $20/photo before. But I’m also not opposed to going a bit under $20 for this person because it seems like he is interested in buying lots of photos. I guess long story short, how do I go about negotiating pricing? Thanks so much for any advice / suggestions!