There were about 4 testing companies i worked for in Dallas. Better pay $100 an hour wasnt unusual but $25-40 was more usual. Frito Lay was a big customer. Come in and taste 4 versions of potato chips an evaluate them on color, taste, saltiness.
Other companies did beer, frozen dinners, fast casual menu items, chop saws, banks. They were testing items where the companies headquarters were. Guessing you need to be in a major metropolitan area to find these companies.