This is great pricing if your party is 2-3 people. However, that doesn't describe many American living situations. In our case, we would need a larger vehicle for a trip. Expedia is currently quoting me $700-$1,100 for the week you searched for a non-luxury vehicle like a Nissan Pathfinder. This doesn't include insurance or other add-ons, which I typically decline.

(It's outside my risk tolerance to reserve an economy car and gamble that I will arrive at the airport to be delighted by a complementary upgrade to a vehicle large enough to transport my party.)