The NFL Network is just like any other cable channel. Some people get it, others don't. When I lived in Virginia Cox offered in. Now that I live in NY I can't get it through Time Warner.
They do not offer it "pay-per-view." They want you to make an angry phone call to your cable provider so your cable provider will agree to their outlandish terms.
Your best bet is watching the week 17 game at a bar or a friend's house.