Yep, sometimes the finishing in these smaller companies might not be so great. But then again some of these are quite well finished as well. But all will offer good value.
The smaller companies have less costs to contend with like insurance, employee insurance and contracts, and they do not need middle-men--- so the cost for these AMSU like pads will be less than 15 pounds normally.
Also subtract the cost of advertising and sponsorship and the low cost seems even more plausible.