Well, when people from other countries say that hourly rate there is so much cheaper than here in US, my question usually is - how does that relate to average income there. I mean if a typical monthly income in that country is, say, $500 (no idea which country dansa is from, so totally making up that number), than $15 is a lot of money there.
When I saw the OP, I thought the same, "it's all relative". So I took my various dance teachers hourly rate and worked out how many hours I would need to work at adult minimum wage to pay for my lessons:
£16 = 2 and three quarter hours
£24 = 4 hours
£38 = 6 and a half hours.
I know my lessons are good value for the level of teaching/dancing (many people in the UK would pay a lot more) but it does make you think.