This Zmodo 500GB 4 Channel Surveillance Kit (model PKD-DK4216) drops from $178.99 to $158.99 at Newegg when you use coupon code EMCYTZT4552 at checkout. Plus, shipping is free. This was the lowest price we found by $20. It can store video on a 500GB hard drive and comes with high resolution cameras with night vision capabilities. It also features 3G Smart Phone live view access and more. Deal ends 10/6. There is no sales tax (except in CA, NJ, TN).