I am curious about if they ask for a receipt to check to see if your toy is indeed a minimum of $15 ?

I have a bunch of large toy cars / trucks / fire engines, all in its original packaging but don't have a receipt as it had been in my closet for so long, certainly don't remember how much was it cost when I bought them, are they flexible enough maybe to take maybe 2 cars for 1 pass, so 4 cars for 2 passes ?