As most people probably realize, many gun and accessory manufacturers include a discounted NRA Membership when you buy their products. Usually this is a card that is included in the product package, but sometimes you can just go sign up on the web. So, for example, you can go to https://www.nra.org/galco and get an annual NRA Membership for $35. They also have discounted multi-year and life memberships. For reference, $35 is the same as NRA Membership cost back in 1995.
If you are wondering how they do this, NRA has a Recruiters program where you can be paid for every member you bring to the NRA. An NRA Certified Instructor might supplement their training income that way. But many recruiters, especially companies like holster maker Galco, use the payment to reduce the cost of the membership to the new member. Note, you don’t have to buy anything from Galco to take advantage of the offer.