Liechtenstein, it depends on the costco. Though none have a selection like a fine spirits store (binnys, etc) there are some that carry Macallan 12 and 18, Glenlivet 12 and 18, Balvenie DW, the whole Classic Malts range (especially around Christmas and fathers day). I have also seen JW Blue, Gold, Green, etc, as well as some of the Kirkland Signature Macallans. Glenfiddich 12 and 18. They also carry some other premium spirits such as Grey Goose, Patron, Remy Martin XO, etc. But it all depends on which Costco. Some have none (or just Glenlivet 12) and some have all of these. They also have a good selection of wine and beer.
Prices are generally good (Balvenie DW $38, Cragganmore 12 $47, Laga 16 $83 (good for out here) etc. Wine and beer are also well prices.