That's on the low end. I've looked into it and seen prices on the order of $1000-1500 per treatment. If you filter those out, many metro areas simply have no provider that charges what would seem to be a justifiable price. Abusive pricing is a big problem for this product it seems. Several advocacy sites that I saw that maintain provider lists make note of this.

Most of the expense is that it's an IV, so you need a trained nurse to administer and oversee you having it in and out; at least, that's what the doctor who ran the practice I did this at said, and given the cost of ketamine, it made sense.