Yesterday I bought a player similar to the 546 here from user Campus111 on eBay. They also have a store: campus111.com. I bought the 512mb version for around $40. I researched their feedback thoroughly and it looks like they are trustworthy. Here"s a picture of the one I bought:
Anyway, just wondering if the audio, picture, and video quality were all right with the players similar to the one I ordered. Thanks