Some LGS owners offer deals on booster boxes in order to gauge customer interest in a product, or possibly even to shore up their purchase amount to get a better price per box
Similar items Rare Bulk Pokemon Cards | !!CAN SELL SEPARATELY
In my years of personal experience, examining good decklists, and talking to people much smarter than me, 50 mana sources is about the right number for most decks to shoot for, usually 37 lands and 13 ramp sources for a general budget deck
Each of these will trigger Ob Nixilis
Reprints of the card are inexpensive, but Alpha copies are costly
Pyro Dance Once during your turn, your may attach up to 1 Basic Fire Energy and up to 1 Basic Fighting Energy from your hand to your Pokemon in any way you like