Premiums. Irwin Music Shop gives its customers coupons redeemable for a poster plus a Bo Diddley CD. One coupon is issued for each dollar of sales. On the surrender of 100 coupons and $6.00 cash, the poster and CD are given to the customer. It is estimated that 80% of the coupons will be presented for redemption. Sales for the first period were $700,000, and the coupons redeemed totaled 425,000. Sales for the second period were $860,000, and the coupons redeemed totaled 755,000. Irwin Music Shop bought 20,000 posters at $2.50/poster and 20000 CDs at 7.50 dollars per cd. Prepare journal entries for period 1 and period 2. Record entry for estimated liability