If you are looking at a particular machine and have the year and/or serial number (and any other info),call or email Apqs and they can give you a rough price range for that machine. If you are just wondering price ranges in general, again I’d recommend contacting Apqs and asking. I was shopping for a used Millie machine earlier this year and they were so helpful and helped me get a perspective on what a fair price range would be for different vintages. It was really helpful. I’m sorry I don’t know more about the Lenni prices, but give APQS a call! Good luck!