Redeem coupons, buy premium items, and manage your balance. The Golden Key costs $1000 and unlocks the vault.
Each coupon can only be used once per session.
Starting balance: $100. Max from coupons: $75. Total: $175. But the Golden Key costs $1000...
What if you could redeem the same coupon multiple times simultaneously?
for i in $(seq 1 30); do curl -X POST ... & done; wait