Ok that’s right. You paid 39.99 for New York.
Then you only got charged $20 for Deluxe because you had already paid 19.99. The full price for Deluxe is 39.99. So $39.99-19.99 (you paid) = $20.
So Deluxe is 39.99 and NY is 39.99 which is $79.98.
How much did you pay? You paid 19.99+20+39.99 = 79.98
