The second is to hold a meeting and draw lots one after another. The manufacturer will announce the group purchase price. If you have any questions, you should talk to Groupon staff.
Third, it is generally safe and ok. If you don't think it's worthwhile, you don't have to buy it.
Fourth, compare more and strive for more. See if there is anything wrong with the new car. Look at the kilometers. Generally, it is normal within 10 km.
Fifth, you can ask the merchants for more gifts. Car lock, perfume, headrest, etc.