I bought 2 from Amazon and one of them was terrible, it was so cheap and ugly and I'm trying right now to get a refund once I can get a chance to take some good photos of it to prove my point.
The second one was almost half the price of the second and is amazing! It's true to your dress size and is gorgeous for the price. Mine cost $79:
I got mine on amazon for $79. There's an option for custom sizing: