That is true and yes it does cheapen the value of design. I went to college for graphic design (print) and switched to the web because it was hard making good money in print design where everyone thought the price of printing included design =) Web design is also headed that way due to all the free templates and places like 99Designs. Everything just looks cookie-cutter and people begin to forget that there's real work involved. The same thing was true for photography too ("oh well, anyone can push a button").
Just remember design is a process. It takes time.
Fortunately, hiring a designer (like a programmer) is actually pretty easy if you know what you're looking for. They carry with them a portfolio (like programmers should). So you should be able to see their previous work. You may consider finding someone with design knowledge to review said portfolio if you're not comfortable yourself (much like you would have a technical person review another programmer's work).
Hiring someone is a great way to test them out and yes there's a risk when you hire someone, but that's just part of business.