I have working with a wholesale jeweler here in chicago, and have seen a great selection of round brilliant diamonds, the prices seem to be comparable to online ps stores, like wf, bl, etc. The advantage of purchasing the stone from the B&M is that I have seen the actual diamond in person which is great, but sales tax in chicago is almost 10%, I would not have to pay this if I bought from blue nile, for example. Is this what most of you have thought about as well?