There's no reason why you shouldn't at least attempt a Kickstarter project for these. They bear a mild resemblance to standard (Rider Back) Bicycle playing cards on the backs, but your quirky, hand-drawn art gives them a certain charm. The one change I'd recommend immediately would be to make them more standard as a "righty" deck - I'm lefty myself and even I find a lefty deck difficult to use, plus we live in a world where about 90% or more are right-handed. Come up with a cool box design and you're good to go, at which point you would just need to figure out who will do the printing. There are a few options:
* US Playing Card Company
* Cartamundi
These are the big card makers in the US, but they do have departments for dealing with smaller custom orders - meaning at least a thousand decks.
* Expert Playing Card Company
* Legends Playing Card Company
These are boutique playing card makers that are high quality and very popular, affordable alternatives to the big makers.
* MakePlayingCards.com
One of the less-expensive alternatives that will allow you to make tiny print runs, as little as a single deck, though you will pay more for smaller orders on a per-deck basis. I've seen Kickstarters with goals of as little as $1,000 succeed by using MPC as their printer. They're not as good as the others, but they're far from bad - they use a digital press with a laser cutter to make the decks less expensively.