TomTop offers this Caller ID Pro Call Blocker, model no. CT-CID803, for $15.99 with free shipping. That's the lowest total price we could find by $23. It purports to block up to 1,500 numbers, and features an LCD display.

Of note, this item ships from China and may take up to three weeks to arrive. The countdown timer on the product page does not reflect an actual expiration time and resets daily.