It seems eBay is very random in their decisions. You can even find and buy NDS flashcards, but usually the listings get removed really fast. But there are lots of GP2X's, PSPs with custom firmware, NDSs with flashcards etc. for sale on eBay and most of them just finish normally.
Some time ago, I listed a PSP with custom firmware but without memorystick and it got removed. I relisted the same PSP, included a memorystick with games (although I was vague on purpose in the descriptioin) and it finished.
Just try it again, I would say. You reach so much more people than by this board only. Maybe just mention the SD card, but don't say anything about it having content. If people want to know what comes with it, they can still ask you a question. And you don't have to publish every question.
Btw. Sometimes I think eBay and it's daughter sites (eg. the Dutch local version of Craigslist called "Marktplaats") remove a listing at the first complaint, without even checking if the complaint is valid.