How much does this cost to the nearest dollar?

Walfront DDTCCRUB Battery Charger Module 2S‑2A Li‑ion Battery Charger Board Step Up Boost Battery Charger Module
✔ Specification Condition 100% Brand NewItem Type Battery Charger Module Material Plastic 2 Battery 8.4V Input voltage DC 3-6V (DC 3.7V 5V is recommended)Input Current 2A (version Voltage Current 1.1A (version 2A) ✔ Package List 1 x Battery Charger Module ✔ Feature 1. Switching frequencies up to 1MHz, compensate for voltage loss in quasi‑CV The internal resistance and tracking resistance of the battery are charged Protection battery voltage is lower than the input voltage and battery short Strong adaptability to the input power supply, driving capacity is limited over

Price is $7.00
Price: $6.79