Now here's a vacuum cleaner that, all things considered, would probably be worth more than your asking price. These little Hoover Juniors are pretty rate, especially here in the U.S. (They seem to have been more widely sold in the U.K.)
You really should put these machines on eBay. There are many collectors who look for vintage vacuums and many of them are not a member of this group. Start your auctions at $5.00 and see what the market will bear.......
I suspect this Junior would do pretty well, if you'd clean it up and make it look pretty.