I think second hand professional machines are the best value for money if they have the space, I got a second hand Compak K6 for €140. After removing the hopper and the doser it's still big, but stomacheable.
Yep, about 2.5 years now. Used for moka until I got the 9Barista in February (sold very soon after) and now with the Cafelat Robot since early March.
If you look on some of the asian auction sites you may find them there too.
As usual I would add the Helor 101 to that list.