Walmart offers the Brinks Keyed Entry Tulip Style Door Knob 2-Pack in Polished Brass or Antique Brass for $24.97. Opt for in-store pickup to avoid the $5.99 shipping charge. That's the best price we could find by $13. It fits standard doors of 1-3/8" to 1-3/4" thick.
Saving money doesn't always mean drudgery and sacrifice. These tools make it easy — sometimes even fun.