I spent months last year hunting down a Marlin 1894CSS in .357/.38 for gallery shooting, my local Marlin dealer (Roding Armoury) have had the new Remlins on back order for three years. I've not heard anything good about the probability of them making it into the country.
The one I eventually bought is a used (although it had had likely less than 50 rounds through it) JM stamped stainless, probably manufactured in 2009 from the serial number lookup here:
http://www.gunvaluesboard.com/marlin-se ... -1664.html and I paid 700 pounds for it. The dealer reported huge amounts of interest and enquiries about it at that price but I was the first to ask to reserve it. The stainless versions are even rarer (only made for a brief period) so for current Marlin carbines in .357/.38 I consider that a good price even before the stainless premium. I've not seen blued 1894C or 1894CS versions in .357 go for less than ~ 500-600 pounds with the ongoing supply problems from the US and a lot of them go for considerably more than that (I've seen them sell for £1000-1200, especially if they've had work done on them to slick the action, etc). Admittedly after I bought mine I stopped tracking actively so that's just adverts I've come across in passing since then.
The only ways I know of to find one at the moment are word of mouth or keep checking Gunstar and Guntrader for used ones coming up for sale. There are a few RFDs who get used models in irregularly but I don't know of anywhere that manages to keep them in stock.
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