I ended up getting the boxed set of four.
I'll admit I do feel a bit crazy because I do already have these games. But unlike Columbus Circle it feels like Retro-Bit has put a high level of quality into this physical release. Of course we won't know for sure until we get these games in our hands but I am optimistic.
On paper the price tag of $45 USD each seems reasonable for the quality and the niche market but it does add up. With $30 USD in shipping my wallet got hit for $260 CAD (~$190 USD).