$410 this year for full pitot, static, altimeter and transponder 2 year 91.411 and 91.413 checks including backup G5. My avionics guy brings a lot of gear to my hangar and like Walt said he has to pay to keep everything calibrated. Once he gets everything set up it takes him about 30-45 minutes to finish everything. When you factor in the condition inspection, insurance, hangar cost, 2 year IFR checks, BFRs, AVGAS locally at $5.85/gal, etc, etc it’s usually best not to think too hard about how much it all costs and more about how much fun an RV is. Yeah things have gone up over time but my RV is what keeps me sane when I need to go turn my brains inside out or just take friends up for some local cruising or lunch runs.