Can you Defy a Bullet Time that you paid more than 2 runes for?

Ruling: Yes, Bullet Time can always be Defied because when cost is checked for effects, the printed cost is always checked, not the amount actually paid.

Sequence:

• Bullet Time is added to the chain
• Opponent can Defy at this point (before runes are paid)
• Runes for Bullet Time's power are paid on resolution, not when added to the chain

Nuances:

• Your opponent can never react to Bullet Time knowing how much damage it will deal, since the runes are paid on resolution