Not necessarily as far as the GUI is concerned. One big difference is the data throughput of the backplane. A cisco 2900 series router for example is a completely different beast than a Linksys router. Typically your cheaper routers are fixed services routers that can only accept a certain type of connection. Typically ethernet for the cheapies whereas a higher end router may be modular and accept modules for many different WAN technologies. Another big difference is going to be the operating system software. With the smaller routers your going to have a fixed set of features where a higher end router will have different software options depending on what the requirements are.