I work for an online retailer and we just stopped taking payments over the phone, we take the order and then send the customer a link to make a payment. Something similar could work here, create the order in admin but then have the customer complete the payment themselves from the front end. We use...

@Omar_one Contact @zipurman if you're after something similar to "big spender" (quantity discount). He coded one for me and it has been working perfectly. He might be able to build other ones. Thank you @Moxamint I check it out and contact him Also using a Zipurman quantity discount, work...