Their are some deals out their you really have to know what parts are going for, used original parts do go for a higher price, some is junk some just needs some attention and some are ready to go.
As far as new parts from like CJ or Classic design you can find some deals here as well, but for the most part they are pretty close to usual retail price, you will save on shipping though. Personally I feel CDC is way to high on their parts, I've found that CJ has good prices will run show specials and has alot of inventory on hand.
If you send your friend w/ a list of stuff thats spelled out w/ part, year, color etc and give a general idea of the costs he should be able to figure it out w/ new parts. Used parts is a different animal.