The article from IGN doesnt clarify whether these new cards from the Scene Boxes will be available anywhere else, but it is likely that normal versions of these cards could appear in booster packs of the sets Holiday Release
However, take each of these prices with a grain of salt, as there isn't much sales data to analyze, so even a few sales outside the range can severely impact the card's overall price
Felothar the Steadfast - Card advantage that can draw massively
When you do, exile target artifact or creature you control, then return it to the battlefield under its owners control
Sacrifice after III.) I, II Choose target nontoken creature you control that doesn't have the same name as a token you control
Initially, Media Factory did not intend to print Pokemon cards with any rarity symbols and this is evident in all marketing materials prior to release