The Dollar branch at Denver Airport is a scam combined with robbery. Without my knowledge, they added three additional insurance services: RoadSafe, Supplemental Liability Insurance, and Personal Protection Plan, plus various taxes and fees totaling $1009.63 for 29 days! It was nearly $2000 more than my rental cost. I ended up spending over $10,000! The middle-aged man at the Dollar counter just checked my reservation, asked me to confirm on an electronic signature pad without explaining anything, and I signed. Then, he printed a long, narrow receipt. I took the contract and left without suspecting anything. Returning the car was also smooth, took just a few minutes. Today, I checked my credit card statement and saw a $1009 charge from Dollar. I hurried to look at the contract and found they had added all these insurances. Check Google's reviews for this branch; it only has 1.7 rating. I deeply regret using Dollar and will never use them again. Also, the basic third-party liability insurance provided by the rental company is practically useless in the US, similar to basic liability insurance in China. You really need additional third-party insurance of $1,000,000 to cover any potential costs in case of an accident.