Date Region Description Price Seller
Japan[Product Description]The Mad Professor Royal Blue Overd...$222.87
Japan[Product Description]The Royal Blue Overdrive by MAD PR...$223.01
USAMad Professor Royal Blue Pedal Mint Condition. Mint c...$132.50
UKHere's my Mad Professor Royal Blue Overdrive, couple of...$153.80
EUThe Royal Blue is a boutique overdrive pedal designed i...$170.01
USAVelcro ![Mad Professor Royal Blue Overdrive](https://...$90.00
USAMad Professor Royal Blue Overdrive, one of the most nat...$150.00
CanadaA note about the pedal's condition:This pre-owned 2025 ...$189.00