Block Token is a Rock Token.
Read the full card text for activation timing, costs, and once-per-turn limits before you slot it in a deck.
On the current TCG and OCG Forbidden & Limited lists tracked here, Block Token is Unlimited.
YGOPRODeck lists Block Token for these formats: Duel Links.
Among markets shown on this page, the lowest listed snapshot for Block Token is about $2.22 on Amazon (prices change frequently).
