The reason everyone points Ryan out is because he's well known in the IM world where most IMs aren't designers and don't have any sense for it. I can see a bunch of other better designers out there including as able or better than, and cheaper on outsourcing communities.
There's a bucketload of parasiting on the IM world with everyone scratching each other's backs and my guess is this guy, your regular designer guy fresh out of college, approached a bunch of IM figures and told them he would work for their campaigns for free in exchange for big shot testimonials. Result, instant-guru position.
I checked his covers and he's using both Monciardini's action templates and his own to setup the book standing while the actual cover he does it himself. They are average, averagely-good, relatively clean looking designs, nothing out of the ordinary. Having all this credibility allows him to charge a ridiculous $115 per ebook cover. Not bad for an hour or two of work. IMs don't know better, they aren't designers.
Go to any outsourcing community, find a design type you feel is average-good and ask for an ebook cover. The money you'll save on the difference you can then use to drive some traffic through PPC.
Luckily I don't need any designer, but if I needed to hire a colleague I would first set my first priority: budget. Depending on it, I would either choose to find them generally on the web or on the outsourcing communities. I would choose those that most please my eye and that I know did this this way did that that way, made some typographical nice trick here and etc, it's hard to explain but I would choose them on my own way. I would choose them and add them to my list and label them by commenting "good", or "average", "or mediocre-average design - good price to ratio quality though", etc..