Just had my last pre paid service from the dealer. That was engine and oil filter only. At almost 25k, and going to tow heavy through Can. and AK this summer had the rear diff and trans fluid and filter (s) changed. the cost, about $200 tax included. Hard to see where the 1k comes from unless it's the spark plugs, which was earlier stated, recommended change 100k. Unless you are operating under "severe" conditions there is no need for most of that. Interesting note, when talking with Service Writer prior to the service, was asked weather I wanted "just the fluid" or fluid and filters changed on the trans. ????? Se stated that Ram recommended only changing the fluid up until about 60k and not the filters. Charge for service between the two, "the same". YES, I want them both changed and there are 2 internal filters to change. I also did request that I got the old filters back. Wanted to examine them for wear particles. That said, there was very little wear and the fluid that drained from the canister filter was still clean and smelled fresh. Good to know after pulling heavy for about 12k.