Well Jamie (slappy) has a 10-22 I think though it will only work with croped sensor camera so if in case you ever upgrade or want to use it one a fullbody camera then kinda stuck.

But the 10-22 will give you that distored look it doesnt keep the stright lines.

Damn aus Dollar , that sigma was cheaper when i bought it.
Was around the $660 price from Digrev hong kong.