yup, just like Doc says, the thread is a very common size in production cues and is also very easy to find in upgrade LD shafts from Predator, OB, Tiger,,,,,,,,,and on and on,,,,,,,same pin as Meucci, btw.
Regarding different collars,,,,,,,very common in production cues to changes materials and components during a high production run, nothing to worry about. Just look for basic design, ringwork, etc, and you'll likely find a very close match.
Players cues are cheap, but I believe for the money they are good cues generally,,,,,,,again, "for the money".