Let's say I bought an iPhone SE for 500.00$ with tax, and the current value is 300.00 and you can only lend up to 300.00$.
Suppose I failed to pay from the 1st-month statement, disappeared or something, you can hold the value of 300.00$ or less, if you find a buyer, you are still spending time and energy in the entire process which does not make sense to me.