I can't find one !

I am in the market for a 2560×1440p, 75hz+, 27"ish monitor but i can't find one to really fit these requirements so i thought i should ask you guys(really appriciate it if you could fit a G Sync in here). The big problem here is that i am on a fairly strict budget ($600-$625 max).

Hmm, tricky specifying a price in dollars as most users here will specify models in pounds, and inclusive of 20% sales tax.

Is that Canadian Dollars or Australian Dollars? (or New Zealand Dollars?).

American dollars