Check the main page there is some info. Also, Willow (Samson's mom), Lisa (Tootsie) and Andrea (Southern girls), I believe have links in their siggies. The clothes are wonderful quality; I am wearing my hoodie today at work, no classes until Monday.
The only cost is the clothes with the charter member logo, it will have your username on the back with the year. PM Mark (Boxerforum admin), I believe it is after you order (but don't remember) so he can get the correct information on your order.
It will depend on what you buy...The hoodies, obviously are more than a t-shirt...Are you using the link on the front page? Or use mine in my siggy..I believe my t-shirt was around $30. Keep in mind you can also just order things from the shop without becoming a Charter Member if you wish and the prices fo rthose are about $10 less per item if I remember