Try PCBWAY.com. China based. Website is easy to use, prices are low, and quality is good. Be prepared for a long ship time, and a significant time zone / work difference.
Unfortunately you can't make 1 or 2. You have to make 5 minimum. But when you consider that the difference between making 5 and 10 might amount to as little as a couple of dollars, and their prices already being rock bottom, consider doing it anyway. Unless its huge (like a PC motherboard), I don't think you'll find anyone that will make just 1 for you. And if you do, I can pretty much guarantee the cost will be much much higher than making 5 at a place like PCBWAY.