Well, every extender has no real scope because it would greatly matters on environment -obstacle or any signal interferences , the strength of your router signal and as well as the capacity of your ISP.
TP link, TL-WA73ORE works fine in IEEE 802.11n products but it can access full 54 mbps in IEEE 802.11g and also compatible with IEEE 802.11g.
TL-WA73ORE is also a Wi-Fi certified, passed Clear Channel Assessment (CCA) and works at 2.4 GHZ. CCA technology makes sure that your wireless signal does not conflict with Wi-Fi signals that may be transmitting nearby your connection strength.
TL-WA7ORE flawlessly repeat the signal based on your working router or access point with 9x speed rates and wireless 4x range based on standard wireless G products.
TL-WA7ORE could be configured to an Access Point mode or Range Extender mode which is commonly setup. It can also provide advanced WPA/WPA2 encryption to protect your network against intruders.
TL-WA7ORE works on Windows 2000/XP/Vista/ Win 7/ Mac OS or Linux-based operating system.
TL-WA7ORE would cost 2000 to 2500 pesos (more less $50) with 5 months or longer warranty period.