How long until this concept crosses the pond?
Packaging-free refill shops are on the rise in Wales as the backlash against plastic gathers pace.
Last year saw "zero waste" shops open in Crickhowell in Powys, Tenby in Pembrokeshire and in Cardiff.
"It's a more modern way of doing an older thing," Sophie Rae, founder of Cardiff-based Ripple said.
Customers bring their own containers from home to the stores and weigh the goods they want to buy – minus the weight of the packaging.