Are EdenPure heaters a scam

Yes. They produce 1500 watts of heat. You can buy 1500 watt heaters for $19.95 elsewhere. They may be quieter and in a nice wood frame, but 1500 watts is 1500 watts--the same amount of heat. Ask any physics teacher and they'll tell you this.

Edenpure proves that you can sell anything for any price if your marketing is good enough.