Depends on SO many things! Luck, hard work, INVESTMENT in the right animals -so you're not just producing more common varieties in a saturated market!
Actually, I had a HOUSE-FULL of snakes for many years & reproduced a few kinds of snakes over the years, but not so much for profit...just enjoying the hobby.
I actually supported my snakes nicely by selling surplus rodents that bred prolifically...the rodent-ranch saved me money on snake-food, were convenient (having
all the right sizes & types to keep my various snakes happy), but also a lot of work (& odor-producing! -be forewarned). I know little about life in Canada, but here
in the U.S., doing something as a business also complicated life a bit requiring paperwork (record-keeping for taxes). Another "problem" is that with success (in
breeding the snakes) there is all that temptation to 'hold-back' more & more snakes...I have to say that small-scale (pardon the pun) breeding is NOT likely to
be profitable. And for me personally, I don't enjoy selling snakes that I truly care about & am invested in having raised, knowing they won't all have great homes...
but that's something you'll have to answer for yourself. There's also the "joy" of shipping themunless you're in a big city with a market for what you've got.