I have been crafting for a while now and there is nothing wrong with Tandy tools and stamps, sure they are mass produced and like anything that is coming off a line there is bound to be imperfections, when your starting out there is nothing wrong with getting established on the cheaper stuff. It helps you figure out your groove and what you really need.
For me the biggest kick in the pants is when I purchased some high dollar hook and straight knives thinking I needed "better" tools. Come to find out a good Xacto knife is all I needed to cut my smaller leather pieces and the trim knives have sat ever since. Unused because I just dont need them. They are pretty and if you were to put one next to an xacto knife anyone would choose the Damascus steel hook knife as the "better" tool, but for me its about function not form. So dont sell short the cheap tools and the mass produced Tandy stuff.
Good luck finding your groove.