Newegg has the MSI MAG X570 TOMAHAWK mobo [newegg.com]
for $219.99 + Free shipping
, at 5:00pm PT and back in stock by 5:30pm, if at least briefly... go go go
and again OOS by 5:44pm PT
... no more updates from me here.
QA Update: OOS 6/30
It's a highly-sought-after board. Hope folks snag one.
adding a ymmv part, that some folks (aka few people) may succeed in using code JUSTU22 for $10 off, but the primary deal here is that it's available. everyone wants this, and it's hard to find in stock. $10 off would just be sweeter.
edit 2 after OOS:
Alternatively, Newegg also has the cheaper Asrock X570M PRO4 available for $186. You can consult the google doc I linked in a comment, for information about this other board. I'm not specifically recommending it or making any commentary on its worthiness.