For its newsletter subscribers only, Newegg offers the ASUS Bluetooth 4.0 USB 2.0 Adapter, model no. USB-BT400, for $4.99 with free shipping via the directions below. That's the lowest total price we could find by $9, although we saw it for $2 less in December. It features transfer rates up to 3Mbps. Deal ends March 10. To get this deal:

1. View the ASUS Bluetooth 4.0 USB 2.0 Adapter for $18.99
2. coupon code "EMCPGPF64" cuts it to $9.99
3. redeem this $5 mail-in rebate for the final price of $4.99