How do!
Sadly the mystery boxes seem to be a thing of the past. But, there are some fairly good deals up at the moment to replace them.
https://www.halfmoonbayshop.co.uk/collections/warhammer-1?page=2
Massive Stein, Cereal Bowl and Pinbadge. £30.00, reduced from £44.98
Age of Sigmar bundle (all fairly practical goods) £50.00, reduced from £84.94
If like me you like your merch, they’re worth checking out. I’ve a decent collection and can attest it’s pretty solid quality.