Used diesel / lower purchase price after decision in Leipzig?

Hello together, I’m still pregnant with the idea of getting a diesel. Some I “parked” at mobile. For example, a Citroen C3 Picasso, just under 60,000 km with some frills for just under 9,000€. What do you think could change the selling price here? Apart from the fact that it’s also a negotiation matter of course 🙂 But just so general: Is there possibly something about the prices of used diesel PKS? LG Biggi