Teslas gen 3 wall charger is $890 and could cost $700-1k to fit (really depending on your house, position etc).
You get the mobile charger which can do up to 32 amps/7kw, I've been using this on 8amps since I got my car on a normal (but rcd'd) socket.
How fast you need to charge depends on how much range you need to add overnight or whatever.
My commute is 40-45km and I get 120-140km overnight.
Also note any standard wall box charger should work ok - model 3 uses a type 2 port for AC charging

