I choose to buy on this site because it was one of the cheapest sites I could find. I didnt want to spend a lot of money for something I'd wear for one evening (Halloween).
The contacts arrived quickly, and look great on. The only downside is they are not the most comfortable to fitting contacts. I assume thats where the price comes in.
I dont wear contacts that often, so yes I am kind of a "newb".. but I have tried other more expensive contacts and they end up feeling comfortable and you get used to them in your eyes. The ones that I got from this site never quite got comfortable - they didnt seem to fit right is my guess. They kept sliding slightly off centered covering my pupil and making my vision a little blurry. All I had to do was blink a few times in a row to fix the problem. Not a huge deal - just something to note.
But again, I am over all pleased - I'll only wear them a short period of time on Halloween. And they are effective for my costume. I'd still recommend if you are on a budget!
You can see me wearing them on my youtube video here: http://youtu.be/YgARGPJ-64o