Provide some sort of CC currency ("stored value") that users can load in bigger chunks and then use to purchase items on the marketplace. The point of this idea would mainly be to reduce credit card and paypal transaction fees, if multiple transac...
In addition to providing sellers (and/or buyers) with pricing data for single cards, provide the "lowest playset" price, potentially as a second "Buy Box". For example, what is the cheapest total cost for 4 copies of a single Magic card from 1 sel...
Dedicate significant effort to creating a cart optimizer that actually works for large carts. Allow buyer to specify minimum condition acceptable, whether or not same printing matters, etc.
Create some form of consolidation so that users can opt-in to check out from multiple sellers with one shipping price. This does not need to be as workflow intense as the "reimbursement" model, but Crystal Commerce could act as a hub to receive an...
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