You could easily Whir for something that costs 6 mana, spend 9 mana minus the 5 artifacts you tap and get a investment for a Soul of New Phyrexia or Myr Incubator or something from your deck right onto the battlefield
C Common Core of Chaos X LIGHT Level 2 [ ThunderTunerEffect ] ATK 0 DEF 1600 Cannot be Normal Summoned/Set
This is the game that stuck and became the centerpiece of the Yu-Gi-Oh
Threshold U, Tap, Sacifice Cephalid Coliseum: Target player draws three cards, then discards three cards from his or her hand
Plus, once more cards start entering and circulating in the secondary market, many of these inflated prices should drop significantly
As long as you can find individual cards that are profitable, you can do just fine buying those