It made things a little more complicated, but I've added cash on delivery as an option as I think it'll encourage more market use. When buying, you have an option to make it a cash on delivery purchase, and when selling you have an option of whether or not to accept cash on delivery.

The rules this should follow are:

• Cash on delivery bids can only match "Accept Cash on Delivery" offers.
• These are each indicated by an icon next to the bid/offer on the product page.
• The seller must have market credit to cover the 0.5% trade fee before they can accept cash on delivery (gained by lodging diamonds or making credit-only sales).
• Sales that accept cash on delivery also accept escrowed market credit (compulsory - buyer has option for security).
• Buyers and sellers both have limits which increase with legitimate trading and reduce if they don't go through with trades.
• Cash on delivery orders have to be marked as "Settled" by the buyer and "Paid" by the seller to free up each other's limits for more trading.

I'll be writing a couple of guides to using the market for go-live. Please could people give this a good solid testing bash over the next couple of days, and especially try to create some matching CoD bids and offers. I can still add people to testing if they PM me.