If you want to keep a product at a certain price in your store but want to make it available to your Carro partners at a different price, here's how:
1) Head to your product page and duplicate the product.
Tip: Name it something different so you know it's for Carro!
2) Make your price adjustment according to how you'd like it available to retailers.
3) Now you can set the product to "Active", and make it available to the Carro Sales Channel. More on how to do that here.
4) Make your original product(s) unavailable to Carro.