MYTH: The cost of the gift (received from the invited guest) should be equivalent to what the per-person cost of the meal is.
TRUTH: No. No. No. An invitation to a wedding is not a trade out. A guest is not expected to first of all even know what you are spending per-person, much less be forced to spend that amount on a gift. The bride or groom does not get to dictate the price range of their wedding gifts (even if they tried to do so with their registry!).