The big Decathlon store at Passy sells the screw cap gas canisters. There’s a couple of outdoor shops in St Gervais, on the way up to Les Contamines that had them last time I was there (just pre covid).
A segment in tonight's episode of Channel 4's investigative series Dispatches exposes the sale of uncertified budget climbing gear online - carabiners in particular - via the shopping platform Temu, a Chinese app with...