Transaction 1
(1)CVS 15 pack erasers $0.99 get $0.99 in ECB
-$1.00 in ECB from yesterday
=$0.07 OOP (tax only)
Transaction 2
(1) CVS index card holder $0.99 get $0.99 in ECB
-$0.99 in ECB from transaction 1
=$0.07 OOP (tax only)
Transaction 3
(1) 100ct CVS push pins $0.99 get $0.99 in ECB
-$0.99 in ECB from transaction 2
=$0.07 OOP (tax only)
Transaction 4
(1) CVS index card holder $0.99 get $0.99 in ECB
-$0.99 in ECB from transaction 3
=$0.07 OOP (tax only)
Overall I only spent $0.28
...which was tax only!