Everyone wants near mint or mint condition cards in their collection, and this is a good way to do it
Theres a good selection of small artifacts that you can find in your draft to make sure Delivery Moogle has some solid targets, but as long as you get anything this is well worth the cost
Currently, a Surging Sparks Booster Box has a market value of just one dollar under $250
As such, theres not really a signpost uncommon or rare that would lead me down this path - I mostly draft Grixis when Im getting passed a ton of removal, and maybe see a late Grixis land
Ready to calculate if your cards are worth grading
Of course, you could use house rules to include them, but you might end up falling out with your playgroup when you get your friends thousand-dollar card