Newegg offers the Rosewill TV Lockable Tilt Mount (for 32" to 70" TVs), model no. RHTB-14005, for $19.99. Coupon code "EMCETGF37" cuts the price to $14.99. With free shipping, that's the lowest total price we could find by $3, although we saw it for a buck less last June. It features a 15° tilt.
Walmart offers this Low-Profile TV Wall Mount for 19" to 60" TVs bundled with an Ultra HD HDMI Cable in Black, model no. DCB15202, for $9.28. Opt for in-store pickup to avoid the $4.97 shipping charge. That's tied with our January mention, $31 off list, and the lowest price we could find. It supports up to 77 lbs.