From what I see, Nate's does 1 thing. Supply police. The photos on the website are all police officers wearing police uniforms. The website offers 2 jackets. 1 with patches. The other without patches. For a small shop, that 1 supply contract could keep them in business. Police officers usually buy with a "uniform voucher". $799 may be priced based on what the uniform vouchers allow for. This appears to be a more customized version of the jacket which Taylor sells. Probably better fitting than the generic S-M-L-XL sizing. The inside lining has a better configuration of holster, handcuff loop, pen pockets, and such.
In San Francisco, 2 leather shops supply most police agencies in Northern California. The same jacket is sold by 2 leather shops in Southern California. Logistics. No cop is going from NorCal to SoCal, or vice versa, to get a jacket fitted. Most police agencies have a uniform specification, which details the jacket. So a police jacket from Cal Leather, Johnsons Leather, San Diego Leather, or Golden Bear Sportswear would be very similar. I would guess that there are probably other mom & pop shops across the country, who supply local police, and do not even bother with retail sales.