Ed Roos Cedar Chest

A coworker wants to sell her cedar chest.  It has the Ed Roos Company of Forest Park 'moth' guarantee under the lid.  It is not in good condition, and the inlaid wood on the front has pretty severe damage.  I would like to buy the chest to refinish it, but I'm not sure what to offer her.  She did not give me a price, just wants me to make an offer.  I have found the same exact chest on Craigslist for $100, but it is in much better shape.  I was thinking of offering $50, I'd just like a better idea of the value of the piece before I offer anything.  I'm not looking to make a profit, I would keep this piece and love it.  From what I've read, Roos chests were mass-produced and aren't exactly rare or valuable.  Thanks!