So I have a gtx 970 and I was planning to sell it and get the 1070 when it comes out and guessing it will cost around 450 ,460 usd(in Bulgaria) but today I saw a guy selling his msi gtx 980 ti for 430 usd which I can probably bring down to 420 usd.So shoud I get the 980ti or wait for the gtx 1070 which will be probably overpriced in Bulgaria ?