That price is more than worth paying in competitive, where Gemstone CavernsGemstone Caverns might not even be the only card you have in your opening hand that requires you to pitch a card to get ahead a mana
Strategically, distributors want to give the product to as many stores as possible to retain as many accounts as possible. In other words, because of so many stores placing orders, The Pokemon Company didn't have enough supply to go around, leading to fewer boxes across the board
That said, it still allows you to tutor an aura onto the battlefield enchanting it, so it can prove pretty useful if played right
Eternal Dragon practically lives in the graveyard as it is and Twilight Shepherd expects to go there at any minute
PSA 8s are usually $30-80 unless its particularly desirable
Breaking / Entering The Breaking half of Breaking / Entering is just a toned down Glimpse the Unthinkable, which is a nice card to have in mill decks (or if you want to mill yourself, eight cards for 2 mana is a good rate)