I purchased some hex hills from Wild Child Games and used them in a couple battles this weekend. I thought I'd write a review.
I purchased the basic set, and then two sets of the smaller shaped ones. The company was very responsive and answered all my questions honestly. I received the products about a week and a half after my order, because they had to be made first.
The products arrived in shrink wrapped plastic and in good condition. The hills were kinda stuck together, but I pulled them apart and there was no damage. The hills are just sort of made of a material that likes to cling to each other. The hills were sealed, so I don't have any flocking rubbing off.
I used the hexes on my GeoHex mat. The hexes are 1.5." I initially had difficulty matching up the hills on the mat. I couldn't seem to get them aligned and I worried that the hexes were 2", but what I discovered was that the hexes were just slightly bigger than 1.5" so you just have to settle for the hills spilling over into the surrounding hexes.
The hills are great for stacking on each other. I was also happy to see that there weren't any "half-hexes" like people had commented on before. Every hex is full, so you don't have to worry about determining what is a lvl 1 hill and what is ground level. You won't be able to put different hills next to each other because the edges do come down at a slope, so that's still a valid critique.
The hills are really easy to use once you figure out how to place them on the mat. And they look really good. That's the best thing about them, they look fantastic on the board.
Overall, I'm happy with them. I think they're going to last a long time and they make hex-based games look good.