That probably depends on how much space it needs at the end and whether or not you allow things like coffee shops (after all, we are talking full legalisation).

That probably depends on how much space it needs at the end and whether or not you allow things like coffee shops (after all, we are talking full legalisation). If they just need a counter, I'm guessing Vinmonopolet will do just fine even though their stores tend to be small with well-used space. If they allow for coffee shops/bars, it might be split much like alcohol: Weaker or set strength pre-rolled joints available at grocery stores much like cigarettes and beer and unrolled pot/hash at the liquor stores.