Walmart Back to School Sweepstakes

https://backtoschoolatwalmart.com/
One (1) Grand Prize: Winner will receive the following:
Winner will have the opportunity to select one (1) of one hundred (100) sealed envelopes to see if the selected envelope reveals one of the following Prizes:
One (1) envelope to contain $50,000 payable by check in the name of the winner. Odds of winning 1:100
Ninety-nine (99) envelopes will contain $1,000 payable by check in the name of the winner. Odds of winning 1:1.01
Ten (10) Second Prizes: Each winner to receive one (1) $100 Wal-Mart® Gift Card. Terms and conditions of the Gift Card apply. ARV $100 each.
Approximate retail value of all Prizes up to $51,000.