Exp while vending

[Force-Attuned Krogoth]

I could see it being not too unbalanced. Give job exp (not base!) for the transaction, proportional to the zeny gained. Make it a small fraction, like 0.1% of the value. Selling something for 10m would be less than two leaf cats. Given that we have a tax of 2% or thereabouts, even getting 1% of the money as job exp would be monetarily inefficient for powergrinding beyond normal means. Mammonite is better exp returns.