Not everyone that goes to school is 21. I'm 34. I'm getting my Master's at the university I work at plus my GI Bill so I'm actually getting paid to go instead of paying. Plus,  I'm an adult with a full time job and a credit card.

It's $7k OBO because you wouldn't believe the low ball offers people give. If you think it's too high, make an offer. Sure you can build your own, if you want to spend the time building and tweaking to get the best hash rate. Took me about a month to get it just right but maybe you have more time than I do. Also, you couldn't even get the cards for $3k-$4k, let alone all the other hardware.

I'm selling my mining rig. It gets around 350MH/s. I just don't have the time for managing it now that school has started again and can't handle the ups and downs of the cryptocurrency market.

http://www.ebay.com/itm/Ethereum-miner-ready-to-go-12x-Radeon-RX-580-8GB-GPU-350MHs-/132325679745?hash=item1ecf39a281:g:hXkAAOSwZrtZuphQ

I have ASUS RX580 8GB with Samsung memory. I've been trying for weeks and I feel like I've tried everything but I can only get the card in the higher 26mhs range. I copied the stock 1750 strap to the 2000 strap and undervolted. It seems any time I adjust the clock speeds it becomes unstable. I tried ubermix 3.1 and it goes to about 28 or 29 for a few seconds and then drops down to about 22-24. Any ideas? I have 12 cards so if I can squeeze a little more performance out of each of them it will greatly increase my hashing.