Basically no. You can save by just building your own, and you can also customize.
You can find good deals on the internet or around your area if youre persistent enough.
List the parts that you need, scout all your area for those parts at a good price, and go home and search the internet for product comparison regarding price per performance and or if its efficient enough.
If you have any experience in online transaction then try that too, but be cautious coz some parts are fragile so they may be prone to mishandling. Also youre not sure if its defective or not, not to mention the hassle for replacements and the possibility of fraud.
Can it run the games that you want to play?
Does it gets obsolete too fast?
Is spending more a good investment on it?
~good luck