Instead of getting listed on Coinbase which is almost impossible for small/new projects, I was thinking of using Shopify as an alternative to sell coins. Basically everyone that want's to sell brownie coin would have to setup a shopify store and start selling through shopify.
Let me know what you think

I didn't know that shopify is now an alternative to sell coins. Do you have a link for this or proof that we can sell coins(Altcoins).
Do you mean, shopify is like an exchange platform were We can able to trade cryptocurrency is this what your trying to emphasize
here? Just became curious on this all of a sudden, I wanna know for real, Sorry for being noob.
Think of it like this, you want to sell coins, setup a shopify store and sell the coin for USD at whatever price that you like. It could be any coin, bitcoin, litecoin, each coin is a product on the shopify store. buy the coin, provide your address and coins are sent to that address.