Most of our products have a Price Match Guarantee badge on their product page. If you find an eligible item advertised at a lower price by an eligible retailer within 14 days of purchase, we will match it. Subject to verification.
There may be several reasons why you might get a promo code error such as; the promo code has expired, etc. One way to resolve this is to subscribe to the Newegg newsletter since the majority of our promo codes are sent via email.