Ok...So I like this technology. It's better. Faster to heat, instant simmer, better child safety and it emits almost no heat in the kitchen. Thus, you do not need an expensive vent.
The first induction cooktop sold in the 90s was Diva (GE was actually the first in the 1980s but that doesn't count for many reasons). For a 36 inch cooktop the price was an inexpensive $4400. Then of course, others followed. Bosch, GE, Gaggenau and Electrolux. The price ranges now from $1600+ to $3,800.
For terms and definitions, you may want to look at the definitive electric range buyers guide
Induction ranges first were introduced by Viking of all companies at $6,000.
Then GE...I really like this one at $2500 with convection and two ovens.
Then Electrolux with the first slide in at $3199.
Then YESTERDAY...Frigidaire introduces a range with 2 induction burners, convection and warming drawer for $1699 (hint don't buy a regular electric range over $1699)
Hopefully, companies like Bosch and Whirlpool can enter the fray, so the price will decrease over time.