Firstly, let me say that the title is a -bit- of a misnomer. If you are buying a budget computer, it will likely not play FFXIV. HOWEVER, I have stumbled upon an exception that I did not previously think of:
Go to the craigslist page for your local city and look around. Refer to other threads for specific part options (If you want a summary: Quad Core processor and Radeon 5770/GTX 260+ for good performance, 58XX/GTX 4XX for better performance).
Look around for specific part names. Search for terms like "Radeon 5870" or "Phenom II X4" or "Core i5 750". Doing a search on baltimore.craigslist.org has resulted in several options from $600-1600 and everywhere in between; I even found a 1000W/5770/Quad Core that the guy was selling for $450 because he had to move.
You might find people trying to sell custom-made systems they've upgraded out of, or systems they've assembled just to sell.
Disclaimer: Keep in mind that whatever system you buy, if it's not a Dell or an HP, etc, will not have an overall warranty, so if there are any problems, you will have to contact the part manufacturers. Also, be aware of whether the system comes with a copy of Windows installed or whether you will have to install it yourself.
This option may not be for everyone; I still advise building the system yourself or having a friend help you build it yourself whenever possible (so you're getting brand new parts out of the box) but if you're trying to save some money, check craigslist every so often. I've found some nice deals on there over the years (bought my 55 gallon aquarium with lights, hoods, and a bunch of misc stuff for $100 as an example). Obviously what's available to you locally will vary widely, since most craigslist sellers prefer to sell locally (and honestly, I'd rather deal with someone locally if I'm buying directly from them anyway; I have their address and phone number if there are any problems ^^), and you may or may not see a huge selection, or may not like what you're seeing at first; keep an eye on it and check back periodically. Every so often you'll find someone selling something priced to move because they bought a new system or don't want their current one for whatever reason. Obviously you'll want to inquire why they're parting with the system before purchasing it, but their loss can be your gain if you get lucky and lurk.
Edited, Jul 25th 2010 7:28am by Mikhalia
Edited, Jul 25th 2010 7:29am by Mikhalia