I recognise that spa visits can seem like a luxury; I'm not sure that's entirely true. Taking the waters at a spa like Bota Bota or Strøm in Montreal costs about CAD$75, although you can get pretty good discounts, especially on weekdays. Even at full price, that's about 2% of the monthly income of a median worker in Montreal ($50K/year). That's a lot for monthly visits, but going 2-4 times per year is within reach (ymmv).