is this a good build?

[maxwowo]

http://pcpartpicker.com/user/maxwowo/saved/bfF48d

is there anyway to make it more cheaper without losing the performance?

 

[ChrisLouie]

Drop the 290x and go with the 290. They preform almost on par and a bit of oc and they'll be the same. save as much money as you can.