Most of what comes out of a Pitch Black box doesn't need a second thought: a toploader, maybe a sleeve, into the binder or the shipping stack. Mega Darkrai ex, the Special Illustration Rare, isn't most of what comes out of the box. Recent sales are clustering $240 to $250, well above the full art version at the same numbering, and above almost everything else in the set. Full numbers are in what Pitch Black's chase cards are actually worth. What matters here is what to do with it once it's in hand.
If it's staying in the collection
Our own rule kicks in well before $240: anything crossing $20 gets the clearer toploader option and an inner sleeve underneath, not instead of it. At this price, that's not optional. See the best toploaders for which brand actually holds up, and penny sleeve vs perfect-fit for what goes underneath before the card ever touches the toploader.
If it's going to PSA
A toploader doesn't go in a PSA submission. PSA wants the card in a semi-rigid holder, not a rigid one, and rejects submissions that skip it. Read what a semi-rigid holder is and why PSA wants one before you touch this card again, then work through the full submission checklist so nothing's missing when it ships. A card at this price is also worth a look at PSA vs the alternatives, since turnaround time factors into when it can actually go to market.
What we'd do with this one
At $250, this doesn't go in with the rest of the bulk stack. It gets a semi-rigid before anything else touches it, and it goes into the next PSA batch instead of straight to a listing. A raw card at this price sells for less than a graded one covers in the time PSA takes, and the difference is bigger than the submission fee.
See what a submission needs → Protecting one that's staying home