looking to buy a 2013 xrs

hey everyone. my dad is looking to buy a 2013 xrs 1000. has under 1000 miles. looks pretty good. has front bumper but other then that its stock. ( maybe front bumper comes stock?)
anyways just curious what this item goes for. its an auction so i need to know at what price to cut him off at. ideally i dont deal with auctions but this is a unique opportunity so im ok.
what do you think?
anything to look out for with that year? cut off price?