Oasis 'Sabbia' Wedges for £15!

There's one problem with sales, and that is that you sometimes get cajoled into buying things that you wouldn't normally, just because they're cheap. Take these wedges from Oasis for example. At their full price of £55 I wouldn't look twice at them. Sure, they have a certain Louboutin-esque feel to them, but I've never been keen on light soles with dark uppers. But tell me I can nab these for £15 and suddenly my feelings change. Maybe change is good, and I should try a new style. Or perhaps I should just stop spending money?