Jetpens is a known dealer of stationary crack - I love them. They also put out some great videos and articles about their products, on par with some of Ars' old Mac OS reviews.
Honestly a great way to have a self sustaining niche website.
Looking over the smaller communities I've been a part of over my internet adventures, nearly 25 years, that have disappeared due to costs or other commitments, I wish they all had stores to self sustain and grow their communities.
Now I wonder what the equivalent the online equivalent to cooperatives would be for the internet, and if there are any examples attempting this.