RE: Marlin High-Power
That's a good price considering these were marketed in the $450 price range. Still, where do you get spare parts when it breaks? I guess that can be said about almost anything old. In this case though you have a very short production period with little investment on the manufacturer's part to work the bugs out of the new product, and there usually are bugs with the first run of anything.
The reviews I read when the rifle was introduced were favorable. As I recall Marlin used the best design ideas of the Model 70 and 700 and put them together on the MR 7.
Good luck whatever you do.