I’d jump on it for $375. For $400 I’d probably consider it. I prefer fluted barrels. Less weight, beautiful looks, and still strong and accurate. I dislike ugly slab sided versions. Bull barrels are the best option for the Mark II.
I’d love a 10” Barrel. I have a Mark II I bought new in stainless, way back when I was in the service stationed in California, with a 5.25” tapered barrel (to save weight) and I have a Mark IV Hunter with a 7.5” fluted barrel with laser engraving. It’s a work of art. I have to admit I bought it more for looks than anything.
Most people tend to go for the tilt open Mark IV style. It is much easier to open up. The Mark III and Mark IV have the preferred magazines and mag release.
I used the Mark II for a back pack gun hiking the Sierras. It was fun but I often regretted not getting a longer bull barrel.
The older versions are a bit of a pain to break apart but if you do it often enough it goes easy enough. Wait too long and you may scratch your head. Or maybe I’m just getting more forgetful. “Now, how did I do that last time?” There is a trick to getting it back together and to come apart I used a screw driver, pocket knife, or empty brass to pry the lever on the back of the grip frame. It can be difficult and a nuisance. It seems I have to relearn it annually.
No matter. These are amazing guns. Everyone should have at least one. They helped cement Ruger’s name in popularity. Stainless steel and all metal means longevity.
Highest demand is for the newer ones. Smart people go for these Mark II’s and Mark III’s mostly based on the lower cost, and tolerate the added difficult breaking it open to clean. I used to leave my Mark II assembled and just run a bore brush and patches through it for a quickly and easy clean.
The 10” barrel is what would attract most people, particularly those who don’t have one in that length and/or want to have a couple to compare ballistics.
Check on gunbroker. I think you’ll see the higher priced older versions sit with zero bids and the lower priced ones and the higher priced Mark IV’s move. Mark III’s move better than Mark II’s. Mark I’s are to be avoided. I forgot why. Different magazines?
As I recall the Mark III and Mark IV use the same magazines with a button like the 1911 while the Standard and Mark II have the mag release at the bottom. Which I never liked but can live with.
Good luck
