Norelco 7310 annual razor head replacements and other warranty stuff

I just bought the Norelco 7310 on Amazon for just shy of $40, thought it was a great deal, since it came with a 2 year warranty. The booklet says replacing the razor heads every 12 months will keep the close, comfortable shaving going... I feel slightly deceived. The bottom of the packaging also says cutters and combs aren't covered by warranty. Page 15 of the manual has a picture of the razor going under the sink, but then there are specific pictures of removing the razor heads to clean. The razor heads require special care every month, and the trimmer requires attention every 6 months. This is all so complicated. I might as well have gotten a foil shaver, every foil shaver I've come across has lasted for years...