All our 3d products and music can be used in any commercial game/simulation/educational project.  Once you pay the price listed on our website, or purchase one of our membership packages, you do not have to pay anything further to use the content or pay any royalties.  The price listed.. is the only price you pay, and youcan use he models as many times as you require without further licensing payments

If you purchase a membership for 1 year, you get access to all content for one year, and then you can continue to use the content outside of this membership period - the year membership simply means, you have access to our download ite for the year.