Prices vary widely depending on the building layout and construction, so there is a no immediate way of telling which would be more expensive.
If you are connecting desktops PCs, price up the cabling and use that if the price difference is not too big as it will always be faster, more secure and more reliable than wireless.
If cabling is extremely difficult and/or expensive then use two or three good quality 802.11g access points (e.g. Linksys or D-Link 'enterprise' products or even better Cisco) to spread the load among clients. |