Not really fishy. Good Sam deals with a number of companies and will shop for the best rate. Sometimes you just have to switch to get a better rate. Insurance companies will typically keep pushing your rates up until you finally switch. Next company will probably do the same after some time.
Sign up for cable/internet, price keeps going up. Threaten to leave and, Oh we can offer you a better deal. Why didn't you offer that up front? It's business, they're in business to make money. If you'll put with higher rates they'll keep pushing them up as high as they can.
It sucks but you just have to learn to play the game. I do it every year with cable/internet, lawn care (fertilizer, weed control), etc. Either learn to play the game or pay the higher rates.
