The Pack Rat has only ever had one other Secret Lair printing before, with that totaling $13, which might bode well for this cards foil printing (as the theme/art will more than likely impact the price)
as long as the card costs less or equal to whatever the original card did
When Post Malone purchased The One Ring for $2 million, it became the first card worth more than $1 million dollars
Maybe youre using something like Painter's Servant to make your lands blue or maybe youre not paying for Mystic Remora next turn anyway
Notably, the Restless manlands don't quite fit in any of the top Standard decks right now - there isn't one for Dimir or Rakdos for the midrange decks, nor Azorius for the soldiers strategy, nor one for Selesyna's enchantment deck
The worst part of this one is that you're physically handling your card every time you want to check the card, play with it, and reset it