current dev10 site has products in various states due to QA, this points out when mixing currentcy:
The website encountered an unexpected error. Try again later.
Drupal\commerce_price\Exception\CurrencyMismatchException: The provided prices have mismatched currencies: 41 CAD, 11 USD. in Drupal\commerce_price\Price->assertSameCurrency() (line 316 of modules/contrib/commerce/modules/price/src/Price.php).
Drupal\commerce_price\Price->add(Object) (Line: 465)
Drupal\commerce_order\Entity\Order->recalculateTotalPrice() (Line: 308)
Active
1.0
Code