DMA: Columbia, SC Established: 9/10/2009

Hello all! I'm new here, and this may be a silly question...but, does Dish Network allow their users to purchase receivers/DVRs from places other than themselves? Such as eBay or from a individual? Here's my delimma: I currently have BOTH Dish & Comcast in the house (4 tv's, 2 with dish, 2...