Hi there,
John here from Shopify.
My suggestion would be to use an app that's geared towards retail and wholesale, but can serve a similar function for your business (b2b vs b2c). Check these out!
- https://apps.shopify.com/customer-pricing
- https://apps.shopify.com/supple-wholesale
- https://apps.shopify.com/wholesaler
You'll have one store, one inventory, but separate pricing and possibly a membership login for your b2b. These have free trials too, so it's worth trying out!
I hope this helps. If you have any other questions, don't hesitate to reach out. :)
John
Shopify Guru
support@shopify.com