In the long run, it will save you money if you do oem. 
But it also depends on how hard you are on your ride. 
Everyone drives differently. 

If you order oem and put the parts on yourself, if you can, you will save a lot of money.
You can also try rockauto, they are usually pretty cheap.

alter_native

What is the best budget friendly aftermarket suspension auto part brands?

If you order oem and put the parts on yourself, if you can, you will save a lot of money. 
You can also try rockauto, they are usually pretty cheap. 