With increased frequency amongst store owners I know on the marketplace, as recently as the past week but extending further, purchases have been made of no copy items and gifted to others. The ORIGINAL purchaser was then found to have committed credit fraud and the funds removed from the Marketplace store owner's account - the no copy item, which was purchased by the marketplace store owner with valid funds, not returned.
In the "real world" when we enter an agreement with a credit card company and make a purchase they guard us from credit fraud. If someone gets a hold of our credit info and purchases a jungle gym from Amazon, they don't go after Amazon - Amazon took that transaction in good faith and the onus is on the credit card company.
Unfortunately, LL does not protect the seller. If a buyer with fraudulent funds makes 40k in purchases and gifts them to someone, it is not LL who processed the transaction that is out 120$, it's the seller - the stock is gone and not replaced and Linden Labs makes you go through an endless chain if "Sorry Charlie" support cases quoting TOS.
As sellers we enter an agreement, LL acts as a intermediary and gets a cut of your product - not just a stipend or a fixed amount - a PERCENTAGE. The more you make, the more they make.
I've discussed this with others who sell no copy items and this is a pattern with no end in sight, I propose that on a per listing basis we be allowed to turn off "gifting" on no copy, transferable items - it's becoming increasingly sad what people will do to steal 1000Ls that in the real world costs less than a cup of coffee at Starbucks, but if you keep piling it on - that grift becomes thousands of real world dollars that we, as merchants, are getting pick pocketed and the authority we have to report to are telling us "oh well, you didn't need to carry a wallet/purse, have a mint."