It sounds to me that if you don't want to spend the money on the machine then maybe it should go. I'm sure if you list it on Craigslist, someone will love to get it and spend the money on the pedal. If the foot pedal ever shows up you can sell it or contact the buyer and offer it to them if they pick it up or pay to have it shipped
I know it's hard to let the mechanical babies go but sometimes they need to find new homes