The card does a ton for just one mana, and the dash keyword means it can hit the battlefield and surprise an unsuspecting opponent before hopping back to safety
The article also indicates that nonfoil Shattered Glass is about as common as foil Generation 1 cards, so we get a rough breakdown of 75% nonfoil G1 (6 of 8 packs), 12.5% nonfoil Shattered Glass (1 in 8), 12% foil G1 (again, about 1 in 8) and finally foil Shattered Glass, which will be the 1 in 151 or so that we got from Hidetsugu, less than 1% chance
Highway Robbery Being stuck at sorcery speed makes Highway Robbery less exciting than other Thrill of Possibility variants, but getting to sacrifice a land instead of discarding a card offers the possibility of niche synergies with cards like Titania, Protector of Argoth and Lord Windgrace, plus it makes this a better top deck if your hands empty
The Magic: The Gathering x Final Fantasy card Flash Photography has shot up in price over the past few weeks