What's it worth - used Reefer 250

[AKay3600]

Hey, I'm looking to upgrade to a Reefer 250 and came across this used one for $800 that is 3 years old. Looks like it could use a good cleaning but it also comes with a Banshea skimmer, which I probably wouldn't want to use. What are some things I should make sure to check when going to see it and what do you think I could ask price wise if they didn't include the skimmer. Thanks!

 

[lapin]

Is it chipped cracked or leaking?