You could probably start a butcher shop with that kit.
My thoughts:
would you store the knives in the case? Probably not.
The blade guards are a good thing.
Do you need the fork and does it appear you have a use for ALL the pieces? The fork could be used to lift food stuck on the grates as a lifter fitting en either side of a grate rod. Allin all the set appears to be a good universal set..
The UNKNOWNS are, how do they feel and what kind of quality are the materials, as in, how sharp are the blades? How long lasting are the cutting edges? And how easy are they to sharpen?
Knives are somewhat of a personal thing like a shoe, pellet grill, golf club etc. So guess what the answer may be?
If all feels and looks good, go for it being assured it's COSTCO - no quibble returns.