A dinosaur birthday party doesn’t have to be any more expensive than any other themed party. When it comes to your budget, you can keep things on a shoestring or go hog wild; it’s up to you (and your wallet). On average, parents spend between $400 and $500 on their kid’s birthdays. That said, you can definitely throw a fun dino party at an affordable price. Decoration and supplies are plentiful for this theme, keeping costs low. You can also come up with a lot of DIY activities and games that can double as your party favors (like digging for dinos and keeping what you find).