wholesaler so order only no payment

Hey....

so one of my business's is a wholsaler and I want to bring it through to the 21st century and allow people to order online.

Now marketpress I like but how would we go about having just a ordering process

or is there another plugin out there for this?

I just want to show products and allow them to add them to a cart and then not pay but agree to pay.

I have a feeling I may need to set up this system sepeartly

or.............. I just create a form

can I create a form with pictures?