What is the version of the following sentence with correct punctuation?

Yes it is in fact the most cheaply you can buy in the Tivoli Gardens says Kaj Engmann Larsen 80 years who throughout 25 years faithfully has run the Periscopehire Service in the garden
"Yes, it is in fact the most cheaply, you can buy in the Tivoli Gardens", says Kaj Engmann Larsen, 80 years, who throughout 25 years faithfully has run the Periscope-hire Service in the garden.