When I started I thought it would be cheaper to rent than to buy a router, so I checked at the hire shop; £17.99 to rent per day, checked at local DIY shop, £9.99 to buy! Theyre probably not the same quality, but I've had no trouble with mine. Plus it has plenty of features (dust extraction, variable speed, free set of router bits). Renting is dead money, If you buy it you can keep it for future.
A router is a very useful tool btw.