I have 2 Exmark 60" 28hp EFI units with about 2500 hours on them. Everything works as it should. I was going to continue to use them this year but have decided not to push my luck. I am going to sell them but I have no idea what a fair price to ask is. I don't want to price it too cheap but I also don't expect to make a fortune on them either. Any help would be appreciated. Thanks in advance.