Wondering how much these are on street

I want to know how much these are worth.
Roland JV-30
AND
Yamaha YPP-55
In your opinion on the streets that is.
thanks

http://www.sonicstate.com/synth/

You might want to look these up there. Usually included in the user reviews are recent prices that they sold for.

AJ

PrePal is also good way to check average used prices http://www.prepal.com/

Here is another site http://www.sonicstate.com/synth/

Bernie