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Coinbase for example or ShapeShift to some extend. I can only name these two off the top of my head but I am sure there are more.

That isn't the same thing at all. Monetha allows for easy intergration into a website and allows venders to receive payment, in dollars via crypto. The vender is happy because he/she paid less fees and we the customers paid no fees at all.

Selling your crypto to coinbase and using the dollars to buy an item is much more time consuming and expensive.

Coinbase and ShapeShift offer payment APIs that let users pay with crypto. The vendor gets to decide if he wants to receive crypto or USD.

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