your price is probably OK but the bigger question is... who would want to buy 50 coil stops at one time? especially since new they are like $1.40 each. that's what you're up against. I mean i have plenty of games to put them in, but i still don't think i can justify buying that many all at once. it's not like i have that many games that need coil stops all at once.
maybe break it up into smaller lots? it may open the market for them a bit more. but this is more of a pinball show type item. where you have a big bin of them with a "$1 each" tag. they would sell pretty quick like that. but yea i know, no pinball shows right now...