SteelSeries Diablo III Mouse - Should it be this cheap?

Hi, found a SteelSeries Diablo III Mouse on Amazon for £26.99. I've already bought it, because I thought it looked pretty good in Logan's review and he thought it was a great mouse. But I was wondering if it should be this cheap?

Here's a link:

Its cheap because of Diablo III being quite shit. Id get it SteelSeries make some good shit even at lower prices.

I bought mine at walmart for $20 (£11.90). So  that isn't really a "Low" price for it, haha.