Our first Muji in Canada. =)
Prices are not very competitive, but not totally outrageous either. They do have frequent sales, which is nice.
A few things I wish they would improve on, increase signage from the outside (store is hard to spot), online web presence (wish I could surf their inventory online), and their stock of bed linen and covers. Would be great if they could expand too with a Japanese eatery.
Note they have chart inside the store that maps the difference between North American and Japanese mattress, pillowcase, and duvet sizes.