Even the cheaper Japanese Puch's (pronounced POOOO-K - more an 'O' sound than 'Puck' as many say it) are cult-bikes. And are well worth acquiring. Even a cheaper one - like what you described - can be slowly re-built as parts come your way. The Royal Family members with high-end tubing, such as Reynold's 531, are well worth spending good coin to bring back. I'd ride them before you decide to sell them. I've met a whole string of people who see my Puch A-D and tell me how they had one. But they got rid of it - and doing so was something they still regret to this day!
But you'd have no problem selling it if that was what you wanted. People would make offers from all over the USA & Canada!
I DID get rid of the Bianchi Celeste cable-housing! LOL!