I agree with Bustamove. It really depends on the purpose for the simulator.
If you're talking about getting up to speed with basic flying and procedures, unless you're already using a sim, it probably doesn't pay to get one. For VFR work, it's probably more worthwhile to get back to the books for a heads-up on knowledge and spend time with a CFI than to learn how to fly, say MSFS.
If it to get back into instrument procedures, MSFS is the most cost-effective sim choice, although it seems to me that one of the dedicated instrument PC-sims, like On Top (which I really like), Elite and Jepp has a much smaller learning and more realistic aircraft response.
If the purpose is IFR, you don't need much in the way of extras, although buying a old CH flight yoke on ebay was one of the better decisions I made.