You are only calculating the price of the GC. The GC would be fine for the THC/CBD, but you also need to test for heavy metals, aflatoxins, and do all of the microbial counts. Each of these tests requires a different set of tools, and none of them are cheap. On top of that, even to do the GC analysis, you first need to extract the compounds, weigh out your standards, etc. So just for that you would need an analytical balance, a fume hood, various pieces of glass ware, etc. Then, you also need to have someone who knows how to operate the instruments, interpret the results, and be able to trouble shoot. This all adds up, and by the time you are done you are looking at 100-200k at the low end to set up.