I've read on other sites that people sell their underwear on Yahoo adult auctions, Naughtybids, Craigslist, eBay and used clothing apps like Poshmark or Mercari and even Offerup, although I cannot say for certain it won't violate any rules they have in place for such things. That being said, I don't advocate attempting to sell used underwear on ANY site until you have checked that it is allowed, condoned, approved, accepted etc with public health codes and other legal standards for your area you reside in, and also with the rules set in place by the website that you decide to sell on.
I would love to hear about any sites y'all know of as well, because like the OP, I too have a major surplus and would like to get rid of some and make a few bucks to help out paying my way through grad school. I have literally no more room and the top two drawers of where i store my clothes are packed to the brim with sport briefs, bikini briefs, low mid and a few full-rise briefs (mostly just low and mid rise as thats the bulk of my collection) and I probably have at least one in every color, stripe, pattern, and print that most people can imagine. So any advice that leads to being able to sell some would help in that regard by clearing out some much needed storage space (for new undies of course haha).
And if anyone reading this wants to...erhmm ,,, mmm.... you know, "chat with me" then feel free to PM me. I am a small and medium size depending upon brand, but also have a bunch of boys xl and xxl ones that are easily a men's small and even similar to some medium sizes, only thing is they are way better in terms of color choices. BTW for those who do not know yet, the boys briefs these days are pretty great in terms of options with tons of vibrant patterns and colors, some admittedly a little boyish but in a cute and fun way.
I don't wear any that are too much like what a little boy would wear, like disney or nickelodeon character briefs. That's not me and I don't get down like that, and so most of the ones I own are adult seeming for the most part. I usually picture a guy (adult man) who would wear these kind of undies as someone whom is kinda goofy yet endearingly so, fun loving, spontaneous, adventurous overall and with a sense of humor that permeates most things he does. The type of guy (adult man) that is always making you laugh and having a good time, and so the slight hint of boyishness in the color/print of his undies totally makes sense and fits the guy's personality perfectly.
This is counter to the OTHER type of guy whom might wear these, but is far from socially accepted in his choice of underthings: the kind of guy with a sincere love of and deeply rooted penchant for all things boy, whom has a lifetime membership and spot on the board of trustees of NAMBLA for the past 20 years, whom is generally thought of as a major creepo and pervy dude. I picture a totally serious at all times, often grumpy or crotchety, overweight with no efforts made in terms of body maintenance or proper hygiene type of middle-aged or older professor of I dunno... economics or philosophy of ancient mesopotamia or something along those lines.
That is the image that comes to mind when i steer clear of the boyish designs, and I rationalize my clothing choices by thinking of the first guy when don my rather well-fitting boys briefs that are patterned with surfboards and sharks on a background of solid orange with neon blue elastic trim. hahaha. Trust me it can totally improve and change your day for the better when you strap on something that fun first thing in the morning.
Anyways, I am not actually hinting at me trying to sell anything on this website and of course I am only joking around. That being said if anyone finds a venue for selling and wants to share it with me, then who knows what may happen. Oh and sorry for the tangent, but I felt I needed to ensure that my words are not skewed and undue judgments cast upon me. Can't have that surfacing when I run for public office someday, now can I? hahaha at least not without the tangent/explanation clearing me of creepiness and pervo status....


