Zero. I wouldn't touch it. Look at its backlinks - totally black hat, lots of hidden links (via CSS). Anyone purchasing it would be buying poison.
Most people only buy domain based on Stats, whether it is from PR, MOZ, ALexa, or other not interesting stats (which is fine). I do see the domain was being spammed quite bad from Statistic and black hat sites. Plus the domain was specifically discuss about Casinos. Hmm, I am still trying to understand the relation between the niche of the site with Casinos. I think the site is not niche oriented anymore. I am not sure DMOZ allow education related niche to discuss about casinos. I hope some DMOZ editor in this board could explain it to all of us in this thread.