Why? The average selling price is closer to $100k than it is to the base 70 price.
Sure you can also buy used or CPO, but what is the harm in using a realistic price that rolls off the tongue easily?
When people ask the price of our Tesla, I tell them it's about $100k new, and that Tesla is coming out with a much more affordable car in a few years.
They usually reply, "looks like it's worth it!" and then "will get one in a few years".