If you have black spots in your WiFi network and want to have a better wireless coverage you may be able to do so without spending as much as you thought!
Most people have a cupboard or drawer full of old computer equipment and if you have an old wireless router that you no longer use, you can configure it to act as a wireless access point.
Today we used this technique to expand the wireless network at an Inn. The only configuration change that needs to be made to a wireless router to make it behave like a wireless access point is to turn off the DHCP service which can be easily done from within its control panel.
Using a CAT5 network patch cable, your existing router can be connected to the reconfigured router and immediately the WiFi network has been expanded without having to purchase a new wireless access point!