Help with this domain a2zmarket.com

Hello,
I received an email requesting to purchase my domain of a2zmarket.com.

They want to purchase this at 65% of the appraised market value.

They will only accept appraisals from:

sedo.com
pedma.com
accuratedomains.com

First, do you think this type of offer is something I should pursue. Second, if I do want to sell this domain which appraisal should I use from the list.

Last but not least, how much would you think it's worth.

Thanks