I see refurbished examples of this router for sale for under $140. Is there any problem with these routers that cause, what seems like a lot, of them to end up being refurbished or is this just normal business for companies like Bosch? It's a 2.3 hp variable speed. Might it also be a good entry level table router? Some users seem to like the ability to adjust the router from above the table with what looks like a long Allen wrench