Horrible time finding replacement for rear wheel
 

I'm looking for a replacement for my alex 29er rear wheel (center lock). I want to spend max Canadian $150. I don't care about weight, as long as it's strong, and cheap. I'm sorry if this is the wrong section for this question.Can anyone help me?

Here's a PAIR for USD 140.00 which I found on a quick search for "centerlock 29r rear wheel".

If you rephrase your search a few ways you should be able to find more choices. Also keep in mind that a 29r and 700c wheel are really the same size, except that one is marketed to a mtb audience, and the other for road. Ther may be functional differences, but search both and read the specs since a 700c touring/cyclocross wheel may be just the thing.

A 29'r infers the drop out spacing is 135mm whereas a "road" wheel will be 130mm spacing.
29'r will also be a wider rim than road.

Keep in mind that the OP referred to a price in Canadian dollars, which means international shipping and import charges from a US seller which can easily double the price