If you live in the US. ask a local comp store "if they assemble a pc?"
if so for reasonable price then.
go to newegg/amazon/ebay and buy all the parts you need.
once you have all your part together, take it to the shop and leave with a A+ PC for half the price.
But there a lot of benefits of building your own pc.
I always suggest people to go with a i5 xxxxk processor, for overclocking later on.