Is there a bulletproof suit that i can buy?

Spider silk is stronger than steal when made right.They do make shirts out of this material that can stop bullets.

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There are, but they dont offer good protection like a thick bulletproof vest does. The problem is that when a thin bullet-resistant material is hit by a bullet, it makes such a big 'dent' into the body that it causes shockwaves and damage, especially to internal organs. Bullet proof vest only work if they are thick and stiff to keep these dents from happening. There are some thin and flexible materials (not spider silk) in development that might make great body armor, but its years away.