> you can't just buy one where I live [...] very expensive
Ah, ok. Tnx. I assumed availability(eg [1]), so with a $1k-ish cost similar-order to travel, I wandered off looking for other obstacles.
The HME plugs used with travel CPAPs instead of a humidifier, with calcium chloride foam to transfer heat and moisture from exhalation to inhalation, looked interesting tech with winter coming. But for day-ish replacement.
Oh yeah I can't stand humid air anyway, it makes me feel like choking. So I do without a humidifier even though I get nosebleeds in winter. I tend to rub some lip balm inside my nose and it alleviates it somewhat :P
And yeah the Resmed Airmini and Breez Z2 are the only ones I've seen for sale in my previous country (where it was legal to buy them personally if you have a prescription) but they added up to well over 1000 euros with the battery kit which for some weird reason is not included. For my country (medium-wage) that's pretty steep.
Travel CPAPs are a thing but you can't just buy one where I live. They're only supplied by the medical service here, and they don't do travel versions. It's not allowed to buy one yourself (and they're very expensive, around 700 bucks).