But what if you're gaming downstairs and the router is upstairs and then you have to go upstairs for pizza rolls so you take your gaming laptop upstairs and you're eating right next to the router and so you're just plugged in and then what if you forgot to turn off the oven and your girlfriend is yelling at you "You're going to start a fire! Why can't you remember to turn off the oven? What's wrong with you?" and then you go back downstairs to finish gaming?
If that happens often enough to be worth 43 times more than the cat cable, then it sounds totally justified to me. But also, what if you got a toaster oven for upstairs? To put next to the router?