My experience with regal has been not so good. For small things, especially stuff cut to order, I've found plastic supply of San Antonio, on josephine st near downtown, to be better, sometimes a bit higher price, but they do a good job cutting things to size accurately.

BTW, if you want some very high quality acrylic, I just bought 2 sheets of Spartech polycast 3/8" black. I'll sell small quantities of it, but it is the most expensive acrylic on the market. $10/sq ft.