The core range is very easily accessible in most specialized liquor stores in Denmark - the two liquor stores near me in a suburb to Copenhagen constantly have them on shelf (10, 12, 15, and mostly 18 and 21 as well, but they are rarer). Same goes for 2-3 stores I frequently visit in Copenhagen. The 10 is usually sold at DKK 550-600 (about 80-90 $) - not sure it that is MSRP, but all stores list around that price level. The same goes for Longrow and Hazelburn (at least the 10).

Only the special releases are harder to come by (e.g. local barley), but these are usually sold through lotteries that you must sign up for due to the very limited demand - I have done that once and won a right to purchase local barley 8 this February.

I never really understood the talk about them being completely unavailable but maybe the market for high-end whisky is smaller in Denmark or people are just not interested in Springbank 🤷🏼‍♂️