I’ve been waiting for the PS4 version of the collection to drop to $19.99 for a couple months now. $19.99 seems to be the lowest price the physical PS4 version has been since 12-2018.
Amazon.com / Shenmue I & II – PlayStation 4
$19.99 + tax and shipping apply.
The Xbox One version is also $19.99, but thats regularly on sale for a lower price.