I've just starting to get interest in this Gundam thing.. So I have a few very Noob questions to ask..

1stly how to know the size of a Gundam Model? MG HG and so on so on how to know the size?

Also what is the original brand for Gundam..BANDAI right? I saw many other brands LOL...

ANyway i just want to know how to see the size only..the what scale of 1/144 also i dont understand how read

and what type Size usually cost how much? The bigger the size the more exp right

help would be aprreciated