Firstly the membership of $50 per year is not the cost for a connection, it is a membership fee for joining the association, without any guarantees other than your right to have a say how the group is run. Nevertheless, membership does allow you to get great discounts from suppliers off most Wireless LAN Equipment you need, which if your starting scratch you will save you more than the cost of membership.
However, the cost of equipment does depend on a number of factors but as a rough guide from scratch with discounts around $350 for a full client system that allows the routing of 30 IP's in our local address space. Would looks like this:
1) Grid Parabolic Antenna with a gain of 19dbi or more.
