A new Generation...err... generator....

My neighbor, who will be riding it out with his ex's parents, a couple in thier 90's, as house guests, mentioned he had a decent sized generator. I figured I'd pay him a visit and ask if he'd consider a monetary arrangement to let me plug in once in a while to keep the freezer and fridge cold. He told me no...but offered to sell me a (much) smaller (but still adequate for that purpose) one he had bought and never used. Knowing new ones of a similar size were selling for $700 bucks, I was skeptical it was worth it... I kept asking him how much. He hemmed and hawed and eventually told me to make an offer. I thought I lowballed him with $50, expecting to dicker some, but he accepted without even flinching. Damn, shoulda offered $25.....