In fairness, top of the line costs much more now, too.The base model of the Air 2 was $499...and that was for 16GB storage. That wasn't "top of the line". Each storage increment was an additional $200. And to call it "top of the line" is a bit misleading because Apple only sold 2 models... the Air 2 and the Mini.
Storage increments cost $100 per in the Air 2 days and the top model (128GB LTE) was $829. Now, top 11" (1TB LTE) is $1699 and top 12.9" is $1899. Yeouch.