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 - $16.00
Lightly Played Unlimited - $13.80
Moderately Played Unlimited - $12.30
Heavily Played Unlimited - $10.20
Damaged Unlimited - $7.30