I would suspect very strongly that the .223 boxes are all 50 rounds. They have this stuff at a few other Canadian stores (and more and more dealers will be stocking it soon, I think). I just bought some recently at a local dealer. They had both the 36 gr. "varmint grenade" and the 55 gr. FMJ, and I think the 55 gr. SP as well. The prices at that store were all a little higher, but the boxes are 50 rounds.
If you adjust per round .223 prices to 50 rounds instead of 20 rounds, it puts your pricing right where one would expect, and actually a little less than what other Canadian dealers are selling it for (which makes sense as a non bricks and mortar). At 20 round boxes (which I don't think BH even makes) the pricing would be out to lunch.... cheaper to buy match grade .308!! No, BH sells 50 round boxes of .223. Look at my photo.
For people that want 9mm or .223 FMJ that competes with American Eagle and Chinese and Russian junk on price, you are playing in the wrong league. This is a premium ammo maker. No matter what kind of bullets they load them with, you have to compare these rounds with the other premium brands: Golden Sabre (Remmington), Gold Dot (Speer), Hydra-Shock (Federal), Ranger (Winchester), etc.