I'd wager definitely some kind of scam - maybe with multiple layers. Money laundering is what came to mind - but I think is deeper than just that.

Look at this guy - he has bought a few of these 79.99 wonders - and reviewed them:

https://www.amazon.com/gp/profile/amzn1.account.AEFGK7BJYR2TI2JLLK67ZXPWXP6A/ref=cm_cr_dp_d_gw_tr

This guy has also - but he wasnt too pleased with the goat one.

https://www.amazon.com/gp/profile/amzn1.account.AFHC5OJHKWOVJRGTS3WSDWDMYNWQ/ref=cm_cr_dp_d_gw_tr

Last but not least of my pulling the 79.99 review string, is dear Angela - she seems review a wide mix and doesn't really fit the demographic profile of the other two, but I'm highly skeptical she shelled out 79.99 for a tee with a sunset and a goose....

https://www.amazon.com/gp/profile/amzn1.account.AEQQYBJQ7QC3C4VG7PIDOBGCRUHQ/ref=cm_cr_dp_d_gw_tr

There's something very scammy going on with this pricing and the reviewers.

Edit - here's one more - a garbage truck (?) It came up in my Amazon feed after looking at other ones above

https://www.amazon.com/Garbage-Truck-Vintage-Sleeve-T-Shirt/dp/B09SV7Y3YP/ref=pd_rhf_ee_s_vtp_ses_clicks_nonshared_3/136-3284565-0501733

The one above has two global ratings (no reviews) both one star - but.......maybe they are new and think 1 is good (seriously) or trying whack out competition. But either way, something is amiss.