I buy from Connecting Threads all the time. At first I bought about 3 or 4 sets of samplers, 10 inch squares, just so I could see the real colors and feel the material. So far I've never been disappointed. I'll probably make a big star quilt with the squares.
I also buy from Marshall Dry Goods, they are the cheapest in price. I also buy from Carolina Cotton, Prices about the same as Connecting Threads.
I set up a checking account just for ordering materials, ebay, etc. I don't keep any money it that account unless I'm ordering something. Much easier and faster than Pay Pal.