A few months ago, I off-loaded a Silver Fox Bulleid Diesel- total crud and I did post a very clear warning that it was absolutely awful - didn't stop someone bidding £80+ and providing positive feedback.
By contrast, an early Sunday morning trawl found a lovely DJH S15, complete and a good runner for just £150 with free P+P. Gosh and darn, that is less than the cost of the bits.
Any moral - not really, just the luck of the draw.