I agree about these homemade smurfs but unfortunately, as far as I know, the seller does state that these are homemades and so really it is the bidders who are to blame here unless of course there is other naughty shill bidding practices going on.
I have added a page to Blue Imps recently to try and highlight this problem and as Dyar says, educate bidders.
http://www.blueimps.com/smurfs_news21.html