was the prototype Buster really a prototype?

Backstory: The HiT toys buster prototype had a black rim around his roller wheel, in the final version it was changed to red.

https://www.worthpoint.com/worthopedia/t...3728417334
https://www.worthpoint.com/worthopedia/t...-100751335
https://www.worthpoint.com/worthopedia/t...-469555283
https://www.worthpoint.com/worthopedia/t...1931665166

All of the links above feature a TM HiT toys buster with the black rim around his roller including one mint in box. It seems that perhaps  his prototype was not a prototype but he had a hector like situation (released in one version for a brief period of time then replaced with another version) I think that this version of Buster had the same issue. Or maybe this was a bulgy situation (the window/service window) Does this mean that he is a valid character to collect? that is up to you of course... 

Huge thanks to GreatGordonFan for showing me the bottom listing which caused me to put some research into finding more listings!