Recent buying behaviour hasnt been noteworthy, so its unclear why this and other Reserved List cards like Yawgmoths Will have been growing recently, aside from the obvious reason
For online sales: solid packaging, tracking, and quick replies build seller reputation, which leads to better long-term profits
The most expensive card that I saw in Hobby Off was a PSA10 graded trainer card of Erika
2005 "Gold Star" Holo Rayquaza: $45,100 A part of the Ex Deoxys expansion pack, this Rayquaza card is highly valued because of its gold star status, holographic image, and the fact that it's one of the legendary Pokmon from the Hoenn region
Players are going to crack a ton of Masters 25 packs in search of Jace, the Mind Sculptor, which is a good thing for Wizards (because they'll sell a ton of packs) and a good thing for players (since it will increase the supply of the other cards in Masters 25 , making them cheaper and more accessible)