Need the cheapest new graphics card off PC Case Gear that will be compatible and support 2560x1440

[asuperpower]

I will be building this for someone else and will use a white Yamakasi Catleap (off ebay.)
They will be using it for applications like Indesign, Photoshop, Chrome, Mail etc.
This is the build so far:

However, I need to find a suitable and compatible GPU that will be able to handle a 2560x1440 monitor. I would use a 2500k and integrated graphics but that doesn't support those resolutions.

I need a GPU that will work with 2560x1440 resolutions, is supported and is as cheap as possible (new.)
Preferably a GPU from one of these links:
https://www.pccasegear.com/index.php?main_page=index&cPath=193_876&vk_sort=1
https://www.pccasegear.com/index.php?main_page=index&cPath=193_877&vk_sort=1

 

[DBP]

For that monitor I think you'll need dual-link DVI.
The easy choice (plug'n'play, etc) is a GT 640 card, although there may be some other workable options in the list you've got there.