I also agree.
While not in the industry I think these kinds of mistakes happen more often than not.
Last year a buddy bought a car and the deal was supposed to be $5K off and 2.6% financing but the manager printed off the docs at 0% financing. In the fine print there was a sections for Errors. Now the errors thing seems to protect the dealer more than the customer (of course). Because if the tables were turned, KVG left a $1000 deposit and had buyers remorse he would be SOL!