BUY 3 GET 4TH 65% OFF,CODE: BSE65 BUY 2 GET 3RD 45% OFF,CODE: BSE45 BUY 1 GET 2ND 25% OFF,CODE: BSE25
For example, Buy 3 and get the 4th free. Please notice that the item with the lowest price will be free.
You will get the best price if you buy a multiple of 4.