With the new Zoe at £25K+ there is definitely still a place for used battery lease cars. There seems to be some people on here with a pathological aversion to it, but it can work out well for a lot of people, especially those who do low miles. Just like share ownership of property, it allows people to buy an EV who perhaps couldn't otherwise. Renault are still offering the option in other countries.
Anyway, good luck with your sale. I struggled to sell my ZE40 Signature privately a few months ago. I had it on Autotrader, Facebook and here at a lot less than dealers and despite lots of views, got no enquiries. Your colour is rare and the market changes, so hopefully you will do better.
In the end I sold mine to an independent EV dealer, who paid a fair price, collected and transferred battery lease. PM me if you want details.