How much does this cost to the nearest dollar?

KGUBrass Optimizer for practicing and playing without excessive mouthpiece pressure, the device for correcting excessive pressure, must-have for brass players, trumpeters
Effective control over too much mouthpiece pressure. The system activates as soon as the mouthpiece is forced against the lips too hard. The air column escapes and interrupts your buzz, thus you know that you use high-pressure. No spring, no mess with assembling and disassembling the device. We use magnets instead of the spring, whose functioning is based on the rejection. A wider range of setup. Unlike devices with springs, providing only 5-6 position, the KGUBrass Optimizer provides you with a possibility to change the activation rate with each millimeter. You just need to turn it clockwise or counterclockwise to

Price is $97.00
Price: $97