Purchased a Sigma lens from them using a coupon they sent me. Their website accepted the coupon, except it applied 1/10th the value it was for. Called them about it and they rudely denied to honor the coupon, but admitting they were aware of the issue with their site, accepting coupons that they choose not to honor. Customer service was deplorable;the worst I have experienced in recent history. Will not be doing business with them in the future and recommend you do the same.