Me and Mo have toured Germany's south (Bayern) on a rented motorhome for 19 days last february. It was a wonderful experience. Sorry we don't know anything about buying/reselling a motorhome in Europe, or insurance (our insurance came included in the rental), but maybe we can give you some pointers regarding rental.
- Our trip was to be exclusively in Germany since we started planning, but we found many references that Germany is actually the one of less expensive place in Europe to rent motorhomes, to the point that folks going to nearby countries fly to Germany first to pick a motorhome there.
- We arrived and departed Europe from Frankfurt's main airport (FRA);
- We received a recommendation from a fellow brazilian couple for Ideamerge's website ( http://www.ideamerge.com/germany_rv_motorhome_rental_camper_van_hire.html
); they are a kind of "aggregation" website which coordinate rentals with quite a few "brick and mortar" RV rental companies; after quickly checking their website, we also checked the individual companies, and it wasn't more expensive to rent from Ideamerge when compared to renting directly from the companies, so we proceeded with Ideamerge.
- We were travelling in the winter; we didn't know, but we learned that this is exactly the time (due to low demand) that the companies use to replace their old models for newer ones, and so RV availability is quite restricted. But after a few emails, the folks at IdeaMerge managed to secure us a motorhome that would exactly fill our needs, and at a good price (we rented a compact Dethleffs A 5831 motorhome for EUR 1312.00 total for 19 days, including insurance and also shuttle service to/from Frankfurt airport). The motorhome was rented though one of their "affiliated" companies called McRent: they have a fantastic staff, the lady who received us when we arrived was really helpful. I must say I have no affiliation with Ideamerge or McRent apart from being a satisfied customer.
- We don't know anything about the rest of Europe (we went just briefly into Austria border over the Alps, and visited no other coutries), but South Germany is a wonderful place: beautiful nature, great history (castles and museums specially), and all the people were very kind and helpful (with just a single exception, an unfriendly bus driver in Stuttgart).
- We planned to sleep all nights at campgrounds, but ended up doing a lot of boondocking: we slept 3 or 4 nights "in the wild" (just went out of secondary roads and into unpaved ones for a few hundred meters, and camped under the trees, or at dark-sky astronomic observation spots that were previously recommended to us -- Vall likes to look at the sky through his telescope and even lugged it along for the journey).
- The best overnight camping spots were the "Rasthaus": they are large parking lots right beside the big fuel stations on the main roads ("autobahns", the ones labeled with "A" and a number, like "A8", "A9", etc). There are quite a few amenities at these places (restaurant, convenience store and toilets at the station), and we felt very secure there as they were well lighted and there were many other travellers (in cars, trucks and also some few motorhomes like ours) passing the night there too. The cost was the best part of it: exactly zero, although we of course dined (or had breakfast the next morning) at the restaurant and also refueled there as a "thank you" gesture. This free overnighting contributed to reduce our traveling expenses a great deal, although campgrounds (at least during winter) weren't really expensive: EUR 15 to 25 per night, sometimes including electric, sometimes not (our motorhome heater ran exclusively on propane, so the electric bill was negligible).
- If you go to South Germany on your trip, don't forget to visit Zugspitz in the Alps: it's their highest mountain peak (they call it "Top of Germany"), and it has a very comfortable ski station: me and Mo don't know how to ski, and we passed just an afternoon there (we tried renting a sled but it was too late, unfortunately) but the views were breathtaking and it was well worth the (somewhat expensive) cablecar fare. Another place we highly recommend is Garmisch-Partenkirchen: they have a hike through a narrow river gorge (Partnach) where the water naturally freezes and forms out-of-this-world, beautiful ice sculptures. We have lots more destinations we liked but as they are not your main focus we will refrain from posting them now; please feel free to inquire us about them later.
Cheers, and best of luck on your travels,
Vall & Mo.Edit: Fixed link.