It depends on the specific product in question, you oculd try to get an answer in their discord, but if they’re OOS on an aluminum case it’s probably a couple months turnaround as they seem to do them in runs.
The TOFU65 case is arguable nicer than the stock TADA68 high profile aluminum one (which still isn’t bad for its cost).
Honestly, I think the KBD67 is a better option than either. The PCB orients the switch in a south facing fashion which avoids cherry keycaps clacking on the switchtop housings, is more easily compatible with QMK, and in general is more reliable (I’ve had a TADA68 pcb die and on reddit it’s a common question). The 67 is also just a more premium feeling and looking board, with a nicer mounting method, than the tray mount Tada.
The Kbd67 isn’t much more expensive than the other two options, but it doesn’t come with caps, which can make it much more expensive, however.
Edit: Just saw you can get the TOFU65 with the kbd67’s PCB, which may be a good way to go as well
Edit2: maybe that’s not a great option as the KBD65 layout options seems to imply you need to have that blocker by the arrow keys