Using shop to build B2B offer

Site URL: https://koala-seal-sy7w.squarespace.com/

Hi there, my company is currently examining a potential switch of our website to squarespace. We are trying to offer a catalog of physical products without specific prices. Still we see the opportunity to let customers put the quantity of products, which they need, in their basket. Problem is we wouldnt need a common checkout, but the ability to recieve the basket via E-Mail. This would enable us to create a specific B2B offer?

My first idea was simply to avoid the next Steps of the shop by alternating the link of the "Versand" (delivery) Button with a mailto:customemail@... 

Any ideas? Support basically said this is generally not possible but maybe there is an unseen way.