Newegg offers the refurbished Pioneer 4" 2-Way Bookshelf Speaker Pair, model no. SP-BS21-LR, for $34.99 with free shipping. That's $15 under our July mention of a new set and $60 below the lowest total price we could find for new ones today. These Andrew Jones-designed speakers feature 80 watts RMS power handling, a 4" woofer, and 1" soft dome tweeter.
Note: A 90-day warranty applies, but it's unclear who backs it.