My buyer wants my oven. However, it's not been cleaned in 13 years. Ever.

[Tinker]

Is it only the Ovenu man who can save me/it?

Help please.

tbh I'd get a quote for cleaning it up and charge him that plus a bit . That way you're not losing anything.

But the oven is only worth the cost of the cleaning up.

tell him its "sold as seen"
and your laughing

Presumably you weren't planning to take it with you though, whether the paid or not - so treat it as a bonus!

Honestly, he's a nice bloke, couldn't do that to him! I'll have ago myself, am sure it'll be passable