Looks so difficult to get more information over the phone. What's the price range and where to purchase the tickets??

Website is your best bet. https://philadelphia.legolanddiscoverycenter.com/tickets/

Look for discounts and promo codes with goggle... legoland plymouth meeting promo code...Prices start at $17 with promo code or coupon with over 1/3 off. Good luck 😉😉😉

There is only one price there $29.99. Online there are more options, plus you can reserve your time slot. Otherwise you might be waiting around an hour or more for your entry time.