One of those rare promo kits that were given away at the "World Tour" events is currently being sold on eBay.
The seller calls it a press kit, which is not correct. In fact, there were no real press kits for the game.
That's the only one I've seen for sale in a while.
https://www.ebay.co.uk/itm/Death-Str...-/274493591923
But you should ask the seller if they ship outside of the UK.