Caporegime
One "feature" of the Gaggia is ithe sheer number of decades that it has been around and that means it comes with the wealth of knowledge and parts you can get online from the coffee community. Almost every single spare part can be bought and almost every fault can have instructions to replace/fix. The userbase for it is massive and people who use them know how it works. For example, the plastic handle for my portafilter is falling apart, they actually sell just the handle. I could replace the whole thing but that would be £30, the handle itself is only about £5.