Prices here are a bit higher than Dollarama, but they have more selection. This store suits the area well enough. They've got things here that are perfect if you live nearby and need them in a pinch and are too lazy to walk over to Shoppers, Dollarama or Wally Mart.
I frequent(ed) this store often and didn't really see anything wrong with it.
They sometimes get in liquidation stock from other stores. Like one time, I remember they had these old Gameboy carrying cases, where the box had water damage and they were at least 20 years old. (they were for the original brick-style Gameboy) Other times, I'd find bootleg DVD's in their DVD bin.
Edit: As of July, 2015, Buck or Two in the Rainbow Mall has closed up permanently. I think a Dollarama is moving in there soon. read more