I've always wondered if eBay sellers bid up their own auctions to make said item look more valuable than what it is and weeks/months later try and flog it for the higher price (not that I'm accusing this seller as it could well of been genuine).
Hmm, hard to call it really. I'm probably 'over suspicious' when it comes to schill bidding etc, but it could well be genuine.
Anyhow, it's back on again now (don't ask!) so I'm just sounding the lad out!