Hey Mike I honestly don't mean to be rude, but you're offering 2 tanks as "priced to move" that cannot be filled with water without money & effort being spent on them. $1/gallon is about the standard price for a functional second hand tank. If you need to move them quickly then your prob gonna need to drop you price significantly, or repair them yourself to get what you're asking for them.
Its your call, just saying what everyone is thinking.
Peace mate