The cheap compost from Lowes (both cow manure and mushroom) isn't much more than soil mixed with wood chips. A lot of wood chips. Very little nutrients. I initially tried both of those with my SFGs, and the fussier plants either were stunted or didn't come up at all.
The only difference between them and the generic "garden soil" seems to be that the "soil" has a little perilite and some fertilizer thrown in. I might put a thin layer of it in the bottom of my beds, but I wouldn't depend on it to grow my plants.
If you have to buy from a big box, Black Kow seems to be the way to go. If there's one near you, check your local (non-big box) gardening store for any additional types; the same people who make Black Kow also make a chicken manure version. Don't just settle for what's on the shelf; ask if they can special-order. It may cost you extra, but I'd rather pay more for something that works than less for something that doesn't.
Personally, I'd recommend making your own. A compost heap isn't difficult to do, and a worm farm isn't much worse. If you don't have a gardening store near you, odds are there are some farms (or lots of trees if nothing else) where you can find what you need. Until you get there, though, don't scrimp too much or you may wind up regretting it.