Are you referring to design or the actual production? If it's design, then you should think about holding a Contest in the 'Contests' section of the Buy, Sell and Trade area, but if it's production then sorry, I don't know.
online there are several business card printing companies that do decent work cheap. I have had work done by vista print before, it was cheap and decent quality.
VistaPrint is the way to go. Really easy to use website, good quality and delivery is fast. I selected the cheaper 21 days option and my cards still came within a week.
My recommndation is to not go cheap with business cards. A lot of online services provide cheap looking, thin and flimsy cards. I ordered some online one time to save $30, and the cards are just OK. Spend the extra money and go to a place like Minuteman Press or your local print shop. It is well worth the extra money. A business card is a type of first impression, it is very important.
overnight prints is a good one. I got 1,000 cards for $40 from them and I've had many complements on the cards.
I would go to www.goodprint.co.uk, for quality there is a variety of options like laminated or rounded corners. They also use the thickest card - 400 gsm.
Two I have used in the past are. http://www.flyerboy.com/ and www.multileveldevil.com - contact these for bespoke printing they do it cheap, and fast.