honestly you could build yourself something far better for less or same price. if you are able to use some of your current parts like hard drive cd/dvd drives etc etc depending on age of your current system. gimmie me a few and i will throw something together give you a idea of pricing.
ok basic upgrades.... prices are from microcenter.
Intel Core i5 3570K 3.4GHz LGA 1155 Processor 189.99
ASUS P8Z77-V PRO LGA 1155 Z77 ATX Intel Motherboard 159.99
Kingston HyperX blu 8GB DDR3-1333 (PC3-10600)(Two 4GB Memory Modules) 79.99
puts you at $458.99
depending on what you can use from your old computer you need case($30-$40), power supply ($70-$80), hard drive ($90-$100) and windows software (you can get win 7 home for 99.99). oh and a cd/dvd drive ($20-$30)
far as video goes. for now you can use the integrated graphics. till you have money for/decide on a video card. before i get the, OMG YOU CANT RUN ANYTHING ON INTEGRATED GRAPHICS!!! comment i have the 1 gen older z68 asus board. i am running the int graphics right now. i can run WOW on good/high settings with no prob and star wars kinghts of the old republic on lower settings. i haven't decided for sure on a card yet myself.
i know that the total prices are higher then the pc you are looking at but its WELL worth it. also gives you more options for upgrades down the road.