We have a similar coach. We purchased in 2011 with 20k miles and we've put on 74k miles more. I doubt we've had $4k of "covered" repair. In part it would depend on if you do any of the work yourself. We "broke" things on the road twice. The first time when off road, hit a bump to fast dropped the drive shaft. Had to have a mobile mechanic come out to get us rolling ($280), drove the 150 miles home and replaced all the u-joints ($80).
In 2013 our fan clutch went out and we ended up being towed into Waco, TX. One of the first questions we were asked by the repair facility was did we have a service contract. Since we did not have a 3rd party to deal with, they agreed to work on it. This was a truck repair place and they didn't like working on RV's (they later told me it was because of the owners not the vehicles, but we were ok
). That was a $2400 repair for belts, fan clutch, sensors knocked out and pulley.
We have replaced one AC unit ($1300) and had the dash air repaired in 2012 ($700) and in 2020 ($593). But mostly just small stuff over the years. Awning motor ($512), a couple gauges ($130 & $103), parts for the slide motors, rollers for the slides, controllers for a slide & step, toilet parts, roof vent covers none of which cost over $200.
We have replaced shocks, tires, headlights which I doubt would be covered. Our biggest expense was installing a new inverter and other devices to go with lithium batteries, again doubtful it would be covered.
Overall, I think you are better off to "bank" the money in case it is needed over buying an insurance policy, but then we've never had a major expense repair. We keep up with the maintenance (drive slower when off road) and feel these are great RV's. I hope you are as happy with yours after 10 years of use.