I need a single 17" Softline alloy (due to pothole damage to one of mine)

and have been looking for what seems like ages - one has popped up on ebay but the seller wants £150 for it
Not sure wether to go for it ? Seems a load of ££ for just the wheel alone....... but then I could look for ever for just one to come up again I guess - what do you reckon ?