Not a bad idea really. As Suicide said, most places (at least in the States) have indeed done away with layaway, but that is mostly due to the fact that we now have credit cards... so who needs layaway irl?
In PE, however, we don't have credit
A short-term layaway might be something to consider...
Having worked years in retail, here would be the scenerio that I think would work...
The potential buyer and seller come to an agreement. MA could implement such a system in a terminal and/or trade window and give a few layaway options that both the buyer and seller agreed upon. The options would have to encompass several scenerios...
MA would have to make the following three options for layaway to work well and be used....
1) Give the seller (and buyer) the ability to alter the initial down payment... ie. would you like to put 25% down? 50%? 75% down?
2) Give the seller (and buyer) the ability to alter the days to pay it off... ie. pay off in 48 hours? 72 hours? 1 week?
3) Give the seller the ability to charge an interest fee for each day the item is on layaway... ie. if some1 is buying an item worth, say, 200 ped, the seller can tack on an extra 20% to the final total b/c he/she is offering a service worthy of such an interest
Finally- the buyer and seller must come to the agreement in a trade window PRIOR to the finality of the agreement.
the layaway item remains on "hold" by the seller... but the seller/buyer would not be able to use the item until the layaway period was finished nor would the item be able to change hands in the mean time.
And.... if the buyer fails to complete the layaway terms he/she does not get the item (no shi* sherlock) but is out his initial deposit... just as it works irl.
therefore, layaway can behove sellers