That may be true. Seldom do you get more than you pay for. The opposite is the norm, especially when its of Chinese manufacture. If its larger than #4 is it #3? Then there's the quality of the insulation to consider. They won't even discuss that (the most important aspect of wire). If they say its phat and knu its OK. It doesn't mean its fat or new. It sounds so kewl it doesn't have to actually be cool. You mentioned no reputable companies just a few with slick marketing aimed (quite well) at the uninformed.