Why not define that a rent can only have one decimal place ?
This would solve the problem when bots want undercut by 0.0000000001 DEC as this would not be possible anymore.
But would not have the side effects.
Let's say in this way: When you sell your house the estate agent will take a fee AFTER he sold your hours isn't it ? Would you be glad if he take an additional fee every 30 days just for listen your house ?
RE: Market Listing Fees & Expiration