Adorama offers the Peerless 37" to 70" Universal Tilt Wall Mount in Black, model no. YBTLU, for $24.99 with free shipping. That's the lowest total price we could find by $10. It includes an IncreLok feature that allows tilt lock options at -5, 3, or 9 degrees and supports up to 105 lbs.
Frugal isn't smart if you put off replacing these things. Waiting too long can cost money or even endanger your health.