I dont think anyones trying to bust your happiness, but rather just have you check everything carefully. You know what they say about checking others work.
I think it sounds like a heck of a deal to me and Id be interested in seeing the Ebay listing they were on.
Do they look like pretty thick decks on em? Can you order them with the size springs you need?
Let me know some info on em. Tnx and good luck with em. HG