Have you tried charity shops, if they're a thing in America? That's where my dad and I get good-quality gently-used DVDs for £1 each. When they're in decent condition it certainly beats paying £10+ for them new.
Yay! A dinosaur summer camp! Just wait until you hear about how the Christian God destroyed them for their sins...
yeah... that is kind of why 8 year old me said "nope, not going to church anymore." Pastor told me that Dinosaurs were 'put in the ground by god to fool silly people into thinking that they once lived." This to a kid that though dinosaurs were the most awesome thing ever and had coloring books, a hundred little plastic dinosaur figures, and used to make dioramas with them... at age 8....