There are a number of ways that you can get hold of the various BITS Products.
Directly off us from conventions (new webshop planned in 2013)
Leisure Games are a long time stockist and supporter of BITS, and are often used by members of the BITS team to buy their RPG and wargaming needs by mail order. Stocked through Esdevium, our UK distributor, they hold most of our books in stock. They also have extensive holdings of other Traveller material. They will ship throughout Europe and Worldwide.
Warehouse 23 is the main North American source for BITS products, and also ship worldwide. They stock all our books!