A friend of mine recently told me about a great candy store downtown where you can buy candy in bulk (perfect for a candy buffet). Well, I went there with her today and this store is freakin awesome! Its called Minge's (Peter Minges and Sons) and its located at 138 W. Court St.
They have candy in 5lb bags and they also sell boxes of individually wrapped candy as well, but their prices are great! Ex. 5lb bag of gummy bears for $8, box of 72 rolls of smarties for $6. I checked on candywarehouse.com and the same gummis are $19.50.
If you plan on doing a candy buffet, I would highly suggest taking a trip downtown to see what they have! Their hours are M-F 9-5, Sat. 9-3.