If you had an Unicorn Account you could see a chart with the price development of this module and the average price asked for this module.
The Unpleasant Surprise here is actually a fun little fuzz pedal with some unique controls for dialing in your effect. It requires a 9v power supply which is not included, and doesn't use a battery. Volume and Onset parameters are controlled by knobs, while switches allow you to enable a treble cut, open / saturated amp bias, and a crush effect (the amount of which is affected by the Onset knob). It's in great shape.

This offer was fetched from reverb.com. You cannot contact the seller via ModularGrid. You have to visit their site.
Look up onDisclaimer: Modules listed for sale on the ModularGrid Marketplace are offered explicitly by their respective owners. ModularGrid is not affiliated to the sellers and takes no legal responsibility in any transaction.
The internet is a rough place and fraudulent behavior can occur. If you are concerned about dealing with strangers consider buying your module at an authorized dealer.