We are taking our 8 and 12 year old daughters to Disney this fall. It will be the first time staying multiple days and in a resort. I want to treat them with pins and lanyards when we leave so they will be ready when we get there. I also want to avoid paying full price. How many pins should I purchase? I found a lot from a trusted seller on ebay that is 77 pins and 3 lanyards for $79 + shipping. (which is high for shipping) I'm not sure if that is going be more than they really need or not. If so, I found some lanyard starter sets that come with 8 pins on ebay for $18.50 with free shipping. Which should I do? I don't want to buy the smaller sets if they are just going to want to purchase more pins in the park to trade at full price. Thanks!