As far as a loaf of bread, if you're talking HOLSUM bread, figure around $3 a loaf. You can get locally baked bread, substantially cheaper. However, they don't have any preservatives. So, for ME, I just buy US bread, as otherwise, the bread molds before your week or 10 days is up. Not worth it, to me.

As far as basic provisions, in general, grocery stores like Super U and Carrefour stack up well beside any grocery store in the US, or in many cases, better than your state-side store. You should not have any problem buying anything you need at the grocery store.