Wii Fit costs $100, and its driven the balance board's install base to rival the PS3.
So $100 is fine, so long as the software justifies paying for the hardware.
"The worst part about these reviews is they are [subjective]--and their scores often depend on how drunk you got the media at a Street Fighter event." — Mona Hamilton, Capcom Senior VP of Marketing
*Image indefinitely borrowed from BrainBoxLtd without his consent.