My experience is that Wiggle is likely doing the exact same thing Amazon (and others) do.. ie. dynamic pricing based on lots of little factors including location, other competition, time of day, recent demand, etc. A jersey and some bibs I bought a couple weeks ago, since then have changed price from purchase pricing ~$80 per item, to over $100. Now one of them is back to near where it was, the other is still a bit over $100.