Overstock.com offers the Gemmy 4-Foot Inflatable Reaper on 3-Wheeler, model no. G08 62598X, for $90.99 with free shipping. Outside of the mention below, that's the lowest total price we could find by $9. It self-inflates and lights up.
A close price: Sears has it for $91.89 with free shipping via coupon code "SEARS5OFF50".