As I said in your Intro thread, I bought the Marlin in 44 Magnum last year primarily as I was wanting a lever gun in pistol caliber and it was available in lightly used condition at a fair price. The used lever guns in 357 magnum go very fast at a higher price as they are the most desirable for the CAS. Buying new won't be a factor in that regard.
I really wish that I would have waited for the 357 now. While I set up for reloading the 44 Magnum, everything is more expensive in terms of the components. The recoil was also a big surprise firing factory 44 mags. My thought process also centered around buying a revolver in the same caliber as the rifle. As I already have a Dan Wesson model 15 that would have been taken care of already. When I began to price out 44 Magnum revolvers it was a real eye opener.
I know we have members who own the Rossi lever guns and they should be along shortly.