To me, doing it myself is not about cost. It's about knowing that every plug was removed & replaced with the right tool; that every drain location was allowed plenty of time; that the magnets were cleaned completely; that every thread, both male & female, was wiped clean and inspected; that the filter can was thoroughly cleaned; that every barely visible zerk was wiped, greased, wiped; that the air cleaner cover and compartment were cleaned; and that everything was put back properly. That leaves just one thing: what to do with an overfilled 5-gal can of used fluid (besides storing it in an old shed).The 50hr service is totally doable on your own. Just don't forget to do the other things on the list after changing fluids and filters. It is a great time to get under the tractor with wrenches to check tightness and lube all those hard to reach zerks. Invest in a maintenance manual if you don't already have one. I cannot recall if Kioti has updated the CK manual (the old one was not great) but I can vouch for the new DK manual as a model of how these things should be written and illustrated. They cost about what you'd pay the dealer for an hour of a mechanics time so are good values.