$25 for this little gem? A good buy. Also picked up a Yamaha PSS460 for $20 and Casio PT100 for free.
Then there’s this guy (with aux in) at a cool 99c:
Not a bad day!
Newish technology applied to the oldest of human investigation. It’s great to see the progression from eyes on the ground (looking for mounds/hills) in early archaeology to the introduction of the airplane and cartography to heat mapping and other more modern technologies to finding ancient settlements.