VCP has images, they aren't hard to get. Here you go.
I feel like the price for the SGC was too high. Market value for their "holders" isn't really the same, and in these mid grades there are often flaws that PSA probably downgrades. I know I'm speaking broadly, but I think most that try and cross would tell you the same thing - expectation from SGC to PSA should normally be a grade lower. There are exceptions, and this might be one.
As someone who collects T206 portraits I can say the Matty is a tough one to find in the mid-grades that really ticks all the boxes. I've owned 4-5 of them at different times between 3-6, but don't currently have one as I still have not found the right one.
I don't think the auction bidding looks all that suspect, the winner put in two bids. One at $100, one to win.
This one sold in REA in May for $3,600
Registration is off, centering is good, color is really good
This one sold in PWCC in April for $3471, and in PWCC in February before that (...no additional comment) for $3018
Registration is really good, centering is great but color isn't quite as vivid
This one sold in Memory Lane in January for $2827
Registration is a little off, centering is great and color is great
This on sold in Goldin last November for $3300, and in PWCC in March 2017 for $3450 (oops...)
Registration is a little off, centering is great and color is great
And the SGC 5 Certified High End for $4209
Registration is great, centering is great, color is great