[Danger]

Does Chapters spot check every physical book they get to make sure the formatting is good and that the books are spelling error free?

It's the same thing, as errors are pointed out to the publisher they are fixed for the next printing (one hope's they are anyway).

Personally I would love to see the clerks face as you went back to Chapters or any other book store and tell them you want a refund because the paperback you bought last week has a spelling mistake in chapter 4.

Now I understand where some ebooks just seem to be thrown together just for the sake of the publisher having an ebook version and it looks like someone who failed english helped put it together. Then I can see asking for a refund.

If it bothers me enough... I just use Sigil and edit the book myself. Less hassel than asking for a refund.