Amazon offers Prime members the General Tools Pin-Type Moisture Meter for $14.37 with free shipping. That's $17 under what you'd expect to pay in your local hardware store. It features a backlit LCD with hold button, 0.3" stainless steel pin sensors, and 5% to 50% moisture measurement range for wood (1.5% to 33% for building materials).

A close price: ihomegoodies via eBay offers it for $16.42 with free shipping.