Sometimes you need to modify a tool to serve a special purpose, that you may only need once in a while. Or maybe just once period. There is a place for in-expensive tools, a person just needs to know when to buy the bargain brand versus the name brand.
It is nice to have a tool kit in each vehicle and in the house also. I also like to have a few tools in with the camping gear. It would get awful costly to justify top of the line duplicates.
I like to buy the best tools that I can afford, but a Snap On will get lost just as easy as a Stanley, as well as a China brand.
My thoughts are, that if it will be your only set of sockets, and you plan to use them a lot, buy a good brand. If it is to be an extra set for the trunk of the car, look for the best quality for the cheapest cost. Very seldom do I buy on price alone. Do your research and buy accordingly.
I would check out the quality of the items at Harbor Freight just as I would inspect what I buy from True Value.