Option 1:
Buy an Archer D9 Modem Router and get a BONUS RE210 Wi-Fi Range Extender
Option 2:
Buy a TL-PA8010P KIT Powerline Starter Kit and get a BONUS TL-WPA4220 Wi-Fi Powerline Extender (Add on single unit)
Conditions Apply*: Promotion is for end-users only and is valid for purchases between 01 April 2017 and 30 June
2017. All Claims must be received by TP-Link no later than 7 July 2017. Only one entry per customer allowed. Terms and Conditions apply.
See the TP-LINK website for complete details.