This is the single worst thing about Amazon (aside from the knockoffs); Every time I want to buy something, I do a search and all I get is 200 pages of the same shitty product with some generic brand name like "teksolv". Somewhere in that 200 pages is a product I want. So I go to another online retailer and buy it there.
Edit: the Brand filter would work, except if there are more than five or six brands it dumps you in a huge directory of brands that you can't search, and you can only select one at a time. It's been that way for like ten fucking years! The only thing that would explain such incompetence is some kind of dark pattern.