This is a common issue for most of the business firms nowadays. Business cards have become the basic approach of the companies. Among the most of the companies there are very few who have proved efficiency, because the basic approach must be presentable. I may suggest the name of West End Imaging as they have offered me satisfactory services regarding the issue. They offer high quality, full color, glossy business card at affordable price. I am very satisfied with their valuable printing service.
Don't get cheap cards. Get quality cards printed on quality stock. do you want to say success or do you want to say I'm cheap, I'm a beginner and I don't have any experience or knowledge? Your choice.
I have some really snazzy business cards I printed on Moo (love them!) but I also use Vistaprint sometimes (sign up for their mailing list and wait for the discounts). I'm definitely going to look into the others listed in this thread.
If I know I'm going newbie networking event where only 1 or 2 people are seriously taking action in their business, I now print some at home on yellow card stock. I stumbled on this by accident - had ran out of the nice ones and had yellow printer paper around so I made one in the style of "we buy houses." I called it "JJ's out of cards business card" and people loved it so much (even though it was a flimsy piece of paper) that now I just print them that way on card stock. I still have my professional business cards for regular daily use but c'mon we all know that most of the people at a sell-a-thon reia aren't ever going to do anything with your card.
I've heard good things about online providers like Vistaprint.
But I'd suggest supporting your local printer. They're usually ready to bend over backward to get and keep your business.
If you don't have a dedicated printer in your area, you might also try a local Fedex or UPS store which can also be owner operated and often double up as to offer printing services.
Why don't you try to make your own business cards? I did that few months ago after I couldn't find a suitable designer, and it worked out amazingly! I knew exactly what I needed and it was then easier to do it on my own than to explain to the designer who would at the end do it all wrong. You can read here: http://www.coreldraw.com/en/pages/business-cards-design/ all the steps necessary, and believe it or not, it's not that hard as you think, not at all :)