Northern Auto Parts kits are they any good??

[chevyc1068]

I was looking at their engine rebuild kits and they seem like wwwaaayyy cheap. $237 for a 307 rebuild with pistons, cam and lifters, bearings, gaskets, and all that good stuff. Are any of the parts any good? I mean a set of pistons cost about that much. Is there something wrong with the pistons, or cam? Because their cam kit is only $53.

Has anybody ever used them, and have you had any problems with them??