Justinec101,
The SRT requires 7 quarts of Mobil 1 (synthetic) 0W40. Add a good filter and you're at $60.00 retail just for the materials- unless you have a shop or retail business where you can get a volume discount.
Figure $79.95 as a decent price if you're having someone else do the deed for you.

The R/T requires 7 quarts of 5W20, and THAT you can get in the 5 quart tubbie at WallyMart. Get 2 - or the quart bottles - and a decent filter and you're looking at $25.00 minimum for materials alone. I'm guessing a good price for the R/T or SE oil change would be $39.95 for someone else's trouble.