How much should I expect to get when selling my Sienta?

Hi y'all.

The new Delica model has been announced, and I've decided to go for it. That means selling my 2018 Hybrid Sienta. It served us well as a family car, but a bigger family needs a car that fits everyone.

It's at 37.000km now, with some scratches but nothing that can't be fixed. I've been looking at Goonet and Carsensor and was surprised that similar cars are selling for 160~190 before dealer fees

I've been looking at other posts on reddit about selling their car, and in general I see many of comments saying that the lots will lowball you like crazy, which is more than expected, but none saying by "how much".

I understand that I won't be selling the car to a lot for those 160~190, but what should be the price I should be haggling for?

Also, should I bother to get the scratches cleaned up before selling?

Thanks for the info.