I think, if you do the math as completely as possible, you'll find that you either can't sell your cages for less than what the big cage makers do, or you can but you will be much less profitable than they are, even relatively. Keep in mind the time you spend building the cage, packaging it, etc. It's fine if you can sell your cages at a reasonable price, but if you make $1.38 an hour doing it...

I'd also say that wood cages are in less demand than xpvc. Will you be able to compete with companies that can provide a lighter, seamless product?

Do I think it's possible to start a business making cages? Sure... But I think you'll lose money for the first few years, especially while you're trying to make a name for yourself.

My suggestion? Figure out what it would cost to build a cage and then post an ad on Craigslist or Kijiji or whatever is most popular where you are LOCALLY. Hopefully you get one or two people interested, you build them cages, and then you know how well your business plan works without such a significant stake in it. Don't worry about what it will cost to ship a cage across the country until you've been shipping them across your city!

Keep up the work though either way, your cages look good, even if they're only in your home.