Either player can pay 800 Life Points to negate the Special Summon of a monster(s), and/or an effect that Special Summons a monster(s) and destroy those cards.
Near Mint Unlimited - $21.00
Lightly Played Unlimited - $18.90
Moderately Played Unlimited - $16.80
Heavily Played Unlimited - $12.70
Damaged Unlimited - $8.50