DIY candy buffet?

Any suggestions on how to save money and do this?. I'm literally getting married in four weeks so I need to do these last minute things and this is one of the things I wanted to do but kept putting it off because I didn't know where to start... Any cool and inexpensive websites out there for ordering candy I should know about? I really don't want to spend a lot. How much does this usually cost? Also do u guys have any cute display ideas? Thanks!!