I charge more than that, and I probably don't charge enough.
I have an office that meets the requirements to conduct a checkride per the FAA, I have legal insurance, and I have CFI insurance, which covers me as a DPE conducting checkrides. On a PPL, I spend about 8 hours of labor on the ride. From the initial paperwork and prequalification we do before we even schedule the ride, to the physical paperwork qualification before the checkride can start. Then you add the ground portion, flight portion, post-flight debrief, and MORE paperwork. I take all forms of payment but prefer cash, and I declare it through my LLC. So 8 hours of work for 600 bucks after taxes is barely worth my time. CFIs can make more than that when it is all said and done. I could go pick up a turn at work and make triple that. My certs are on the line, and I am constantly scrutinized by the FAA to make sure I am doing the right thing. I will happily justify the price I charge. I paid 500 for my PPL checkride in 2002. That is 900 today. Airplanes cost more to rent, CFIs charge more, maintenance costs more, and insurance costs more. You spend 18,000 dollars on a PPL now. I am not sorry, embarrassed, or sad for anyone who has to spend 1200 on a checkride.