The seller set a reserve of £600...
Scenarios I can imagine:
- Seller genuinely thought it was worth £600, let a bidder know the reserve in reply to a question and that bidder is now taking the piss.
- Seller is shill bidding his own auction.
- It's a 'fake' auction.
- I'm rich! All this old tat I've been buying is now really a gold-mine and not a pocket money hobby.