A smaller nitch press I do business with as a business is Caree Press/New Page Books. They provide me with some of the speciality titles I sell, and they have been a pleasure to deal with.
They have the same business terms as the larger houses, giving a % of the cover price depending on the volume you purchase. Shipping is also discounted depending on the amount of your purchase.
Paperwork to register with them was easy to fill out, and they are prompt and courteous when filling my orders.
As a book seller, these folks provide a clean and efficient service in providing me with the speciality books that I sell in my trade. A nice company to do business with.