you should make an offer.

price varies widely based on what the word is.

try estibot and valuate.com and domain score to get an idea of what it's worth.

email and don't specify a price. just ask what price he'd like for it. first person to name a figure loses.

if it's much less than valuate and estibot then go for it. right now is NOT a good time for domain names because of the recession.