If the monthly discount is for The PDU Podcast™ monthly discount, then you should take advantage. When you check out and make a purchase, enter the coupon code into the "Gift Certificate" field.
Check for Current Offers
Every month, we offer a new discount coupon for one of our many products. Please click the following link to check if there is currently a discount coupon available for The PDU Podcast™:
More Detailed Instructions
For more detailed instructions on how to apply the discount coupon, please refer to the following article. Although the title refers to The PM PrepCast™, the same instructions apply to other products, including The PDU Podcast™: How do I apply a Gift-Certificate / Discount Coupon to The PM PrepCast™?