Schwinn World GSE electric mens bike

Back in 2006-07 maybe, I was introduced to electric bikes by riding one of Schwinn's new line of electric bikes. It had me so intrigued that I ended up buying a cheaper e-bike because the Schwinn was 2,000 bucks. Now this same Schwinn World GSE is availible from a private party who owned an LBS as new "old stock" for 600 bucks. It's in the original box with all the original paperwork. Is this worth getting or am I just asking for problems. There would be no warranty and I can't seem to locate a replacement battery anywhere on-line should I need one. The only thing that has me thinking about it is it was so nice to ride. Can anyone tell me anything about the old Schwinn electrics?