If it is the same Cimarron (and not the 1st one that sold for just over $100,000) I must say I will never understand why a buyer who is now a seller thinks the item they bought is now worth $30,000 more than they paid 6 months down the road. Likely anyone who was willing to pay $78,000 for it would have done so at Heritage's auction.
Perplexing but of course this is encountered quite a bit...