Throw the stock woodies away never fly crashed blades! The TT composite blades are very good I'm pretty sure they are made by SAB which is a popular brand. You got the black TT blades for $76 I paid $79 for the white gel coat the black ones I've seen are over $100, anyway no that is not expensive. My rule of thumb is 30 sized helis use wood blades to learn on, 60 sized use composite blades only(fiberglass or carbon) that's one of the reason learning on a 60 is way more expensive than learning on a 30. You will also want to check your feathering shaft if the main blades hit the ground it is probably bent.