Hi all. Been on here a few years now. Never collected pumps because they are so heavy and I have a bad back, but I do want to have one to look at in my home.

I like this one, but looks like it has many replacement parts on it. Wondering if you all can point out what is what to me and, what an actual reasonable price would be in your opinion.

https://www.ebay.com/itm/325344719724?mkcid=16&mkevt=1&mkrid=711-127632-2357-0&ssspo=facOJTc_TtO&sssrc=2349624&ssuid=wMgxxa7WQuS&var=&widget_ver=artemis&media=COPY