The Albi one has done very low miles, but still don't think it warrants that price. I bet 200s with similar miles are about the same. That modified Nimbus looks ok on those wheels, but I seriously doubt his claims of 225 bhp and the chip + remap. Just stinks of someone who hasn't got a clue.
I can only assume its people testing the water, rather than wanting to sell.
If things are priced appropriately, they will sell. Its dreamers like the OP posted that are probably just chancing it and hoping for someone gullable.