Maybe you shouldn’t waste too much time on this post, because I don’t really know what I’m doing.
On this Yahoo Answers page, people are discussing CPAP, and the fifth poster from the top remarks that the Taiwan Sleep Disorders Association ( 台灣睡眠障礙協會 sleep.org.tw/ ) charges NT$3,000 for a mask, but I can’t figure out whether they’ll just sell it to a person or whether the person has to buy or rent something else to get the mask:
tw.answers.yahoo.com/question/i … 010KK09567
That fifth poster also mentions Tzu Chi, but I can’t figure that out either.
There’s other stuff on that Yahoo Answers page that looks as if it might be hopeful, but I don’t know Chinese, and I haven’t been able to figure out much on that page using Google Translate.
There’s also this page, that appears to belong to a medical supply outfit, and it mentions CPAP, and it mentions masks, but I can’t see a definite association between the two things in the text of the page (of course I’m at about zilch level of Chinese), and in fact I strongly suspect the masks mentioned don’t relate to CPAP (but that might not necessarily mean that they don’t sell CPAP masks):
At the bottom of the page, they give a physical address, two phone numbers, a LINE number, and their store hours.
Again, maybe you shouldn’t waste too much time on what I’ve written here. Hopefully someone will come along who can give you better information.