As one of its daily deals, THAT Daily Deal offers an AFC or NFC Champs 13" x 17" Wall Cling in Seattle or Denver, bundled with an XLVII Champs Wall Cling, for $19.99 with free shipping. That's $30 off list and the lowest total price we could find. Deal ends January 22.
Of note, it's available as a larger 26" x 35" version for $29.98.
Most taxpayers will see their tax bill go down during 2018. That could impact which type of account -- traditional or Roth -- makes sense for you.