Promotion Terms

BUY 2 GET THE 2ND 30% OFF

Buy any 2 items(same model) in this category, you can get a 30% discount for the second one. No need promo code, Auto delete in checkout. Quantity in 2 multiple . Discount can be increased.
EX: the price of A is $13.99,
Buy 1 pcs of A, you would pay $13.99;
Buy 2 pcs of A, you would pay 13.99+13.99*(1-30%)=$23.78
Buy 3 pcs of A, you would pay [13.99+13.99*(1-30%)]+13.99=$37.77
Buy 4 pcs of A, you would pay [13.99+13.99*(1-30%)]+[13.99+13.99*(1-30%)]=$47.57
... ...

 

BUY 2 GET THE 2ND 50% OFF

Buy any 2 items(same model) in this category, you can get a 50% discount for the second one. No need promo code, Auto delete in checkout. Quantity in 2 multiple . Discount can be increased. 
EX: the price of A is $13.99, 
Buy 1 pcs of A, you would pay $13.99;
Buy 2 pcs of A, you would pay 13.99+13.99*(1-50%)=$20.99
Buy 3 pcs of A, you would pay [13.99+13.99*(1-50%)]+13.99=$34.98
Buy 4 pcs of A, you would pay [13.99+13.99*(1-50%)]+[13.99+13.99*(1-50%)]=$41.97
... ...