Sales history graph dot colors?

[Junkman]

My apologies for noob question...
While browsing I notice that any given poster is accompanied by a graph/chart of sales history for pricing.
There are little dots scattered throughout these graphs.. orange/yellow & green/blue.
What do these dots represent?

[bubbie]

Hi drew!

The dots represent sales, surprisingly. Orange for eBay sales, yellow for gallery, and blue for those recorded by users; well, they all are recorded by users, but you know what I mean.

[Junkman]

Hi bubbie

drew ??

Thank you very much for the info about the dots

[IronBott]

Acting like not understanding drew is so like drew

[Junkman]

IronBott, haha, i wish i could say it was only an act, but i think i am starting to understand now, cheers