I have dealt with Glamour Boutique on many occasions and get good products from them. I am not sure you will get perfection in your look, but the stuff is OK and the service is conscientious.
That said -- Google the Amoena breastforms line for a store near you. I have a set of the Essentials forms that look very good and have a thin, blendable edge on them. I paid $350 for them at the SCC conference Market Place in 2009. They do take the spray adhesive sold at Glamour Boutique, (which is cheaper at Walgreens or CVS), but I bought the forms early in my HRT, and after about 8 months on it, no more adhesive for me thank you.
For better reality at the top of the bra, look up Classic Curves via Google since they are not on the main resource page here. They have a couple of devices that go under your own breasts and make a mound of the available tissue and do give the real you a definite uplift that does look good. Again, not advisable after 12 months on HRT though.