what is the wage?

what is woot wage and what does it mean? I cannot find it in the

Take the number of items being sold, multiply that by the cost of each item, then divide by the number of hours it took to sell out, that’s the $/hour rate of selling (woot wage). If something sells out really fast, that number can be very high.

This doesn’t make sense. If a shirt costs more to make the higher cost would in turn increase the woot wage, if the time to sell out remains constant.