Deal terms for consigning inventory vs buying it

Need some advice on deal terms for a retail deal I am working on. The deal has three components, the cash flow value with a multiple, the real estate value and the inventory. The business is worth about $500k, the Real estate value is $750k and the inventory has a cost value of about 870k. I am working with a lender for a loan on the business value and the RE, but want to propose to the seller that I pay for the inventory as it is sold (consignment) vs buying outright as part of the loan package. Wanted to see if anyone has some deal terms similar to this that they would be open to sharing.