Looking for a realistic price for a bass amp

[Muadzin]

I have an old Roland Bass Cube 60 bass amp that I'd like to sell as I've not used for a long time. I just don't have a clue what I should ask for it. It's from the 80's, I've used it mostly at home, and mostly as a guitar amp because it had a direct out into a mixer capability that allowed me to play guitar with a headphone on so as to avoid angry mobs outside my door with pitchforks. It's got a flightcase cover to protect it and is loud as f***. Except for that one time I played bass in a metal band with a drummer who played even louder then the rest of the band combined.

I'm just looking for a realistic price. A Dutch auction site had one for €50, but that seems ridiculously low.

Some pics:

[somnif]

Every listing I can find for it puts it in the 200-300 US$ range.

https://reverb.com/item/2257448-roland-super-cube-60-bass-guitar-vintage-combo-100-working-gig-amp-upright-amplifier-jazz-rare

http://www.mercatinomusicale.com/cerca/roland-super-cube-60-bass.html

http://basschat.co.uk/topic/221126-sold-for-sale-roland-super-cube-60-bass/

[Jebus]

I got the 100W version of that amp: https://www.instagram.com/p/zpkZFUQ3yy/?taken-by=mikaaneikelvannut

Great amp. Super loud and one of the best sounding bass combos I've played. I think I paid around 250 euros of it in 2006.

[Muadzin]

Thanks guys! Now I at least have an idea.