$3.99 Shipping offer PLUS 10% off on supply orders over $50. $3.99 Shipping is valid only within the U.S. and only to the contiguous 48 states when standard Ground shipping is selected. Upgraded shipping options may be available at an additional cost and select items may incur extra shipping charges due to their weight or size. Select items may be excluded from offer such as current promotions, sale items, kits, packages, equipment or where restricted by manufacturer policy. Offer may not be applied to previous orders or used in conjunction with any other offer. Valid only when source code 214994 is used. Offer ends 9/11/16 at 11:59pm CST.