Having been a Butterfly distributor myself, also under the European price structure, I also say this is close to impossible:
- UK already has a legitimate Butterfly Distributor, and you will need to buy from them, or grey import
- Grey import, Butterfly HQ will hunt down the channel and close that off, so any grey import will be short lived
- Grey import also has a big chance of getting counterfeit products, and also the customers can not have surety from Butterfly Europe (meaning, buy grey products at your own risk) - in case there is any issues with the products (fake or other issues like top sheet separating from sponges - yes, I seen these before on brand new "Tenergy")
Butterfly's margin under European (and also North American) price structure is really little
Lets see what OP can come up with in the next few weeks