good morning everyone this is my first post and already asking for help.

I m looking for a used yamaha electone for my 9 yrs old son & considering a basic one eg elb 01 or el 100 also can .Can anyone advise where to buy used electone or is it actually worth buy a used electone ie if a new elb 01 is approx. 3k now much to pay for a used one ?

thanks in advance for yr assistance & advise.