How much does this cost to the nearest dollar?

uxcell 5 Pcs Piezo Discs 21mm Acoustic Pickup Transducer Element Trigger Buzzer Drum Guitar
Description* This item are brass piezoelectric discs which are essential parts for pickups of acoustic instruments. All the discs are made from selected copper, ensuring excellent conductivity and long-lasting use. It can be easily installed and suitable for many kinds of instrument like acoustic guitars, drums. Great for acoustic instrument pickups, stomp boxes, contact mics, etc. Specifications * Drive Type Piezo Discs* Resonant frequency(kHz) 0.5 KHz* Resonant impedance (ohms) 300 max* Diameter 21mm/ 0.83 inches* Thickness 0.2mm/ 0.007 inches* Wire Length 50

Price is $7.00
Price: $6.99