What do experienced FTA enthusiasts tell a newbie to look out for when searching for a new FTA STB, LNBF, DiSEqC switches, etc. with regards to legitimacy? IOW, could you pass on wisdom about what to look out for in listings that make you suspect that the product is a fake/copy of a real, patented, properly licensed item, or won't perform as claimed?(like on auction sites, Amazon, Alibaba?)