Is a membership worth it for dog/pet supplies? I can get a membership through my DH's work for $20. Last time I did this, I barely used it so hadn't thought to renew, but now, with a new puppy joining our family, wondering if it is worth it for things we will need. I am planning on feeding Orijen which our local pet store carries, so more interested in "stuff" for the dog like beds, toys, etc. Opinions?