Eico ST-70 integrated amp

Hi,

A buddy of mine offered me his Eico ST-70 before he tries to sell it.  It appears stock, it works (including the phono section).  The rotary controls are a little noisy, and it sounds really nice. It's pretty clean considering it's age, and it weighs a TON!

I think the unit is very cool, and I was thinking of getting it for a guest bedroom/study.  So I have a few questions.

Do you all think this is worth pursuing? 

How good is this unit?  

What would be a fair offer?

Thanks.

ctor