Anyone that tells you that cardstock terrain is a brisk business is blowing a brisk wind up your skirt
There has been a definite downturn in the market overall that is industry wide however some of this is simple summer slump. I'm hopeful (and based on some experience) things will start to pick up again now in September.
Our strongest sales happen just after a products launch for roughly one month and this essentially gives us the funds to continue development on the next product. After that time sales taper off to a slow trickle. Usually we get residual sales on older products when a new set launches as well. It's just enough to "keep going". As to which product sell the best; I can't really give you a clear answer here as they all jockey for that position as peoples tastes and needs change. For the most part our sets are on equal grounds if you factor in a sales curve based on release date. I wish I could be more open here but I can't give you an absolute sales breakdown for obvious reasons. Maybe when we open ourselves up to investors...lol
The WorldWorks store does much better business than RPGNow or any other secondary storefronts, which is why you don't see us diligently updating those stores. With the percentage ratios they need from us and the oversaturation of the terrain markets there it just isn't worth it in many cases to keep those "off site" catalogs up to date. Our time is better spent tweaking the WorldWorks store and the products we present here. Which we are hard at work on behind the scenes right this moment by the way