I got my la pavoni used. It literally fell apart on the third shot, the internal sleeve broke. Long story.
I bought the parts, restored it completely and it was a piece of cake.
Maintaining it is so easy. Once in a month or two I take out the piston, clean it and apply some grease to the piston seals.
I have been using it extensively for two and a half years. About 4 shots in the morning, every morning, more on the weekends.
The group head seals are still great condition. The only thing i dealt with since was the heating element gasket.