We now trade in Vallejo Paints

Credit per bottle, minimum 20 bottles per trade.

$0.90 for new or pretty much new
$0.75 for 75% or more full and in good condition.
$0.50 for 50% or more full and in good condition.
$0.25 for 25% or more full and in good condition.

We would just trust your judgment.

That's for like a gift certificate.