Can’t really give you a fair price, as we have no idea where you are located or the labor rate in your area. Plus it will also depend on if you are going to want other maintenance done while the unit is laid up. Tranny runs about $630, belt $45, filters $20@, fluid $7-$15 per quart, labor 2.5-4 hours at $75-$125/hr. Labor is the biggest variable, as different shops do this different ways, plus many times paying more means a better quality job, but not always.