There's a considerable difference in ability between the 560 and 1050ti. The 560 is beaten in just about every game handily by a 1050, nevermind the ti version. For a 1050ti, its closest amd competition is the Rx570, so for those 4 cards you'd be looking at 560///1050/1050ti//570 generally and price will reflect that.
Personally, I'd use pcpartpicker.com and shop for the various versions of cards and possible sales. You should be able to lower the price on that 1050ti (depending on the model) or even choose a better model for a similar price. All of the vendors are Grade A trusted or pcp would drop them like a hot potato, unlike most local shops or small chains which can have funky sales practices.