Jordan has been working furiously over the last several days to create Kits, and he has succeeded! It required some rather clever maneuvering, but luckily he was up to the task!
Right now I just have the Birds in Snow kits up, and I'll slowly be adding more. There are 4 Birds in Snow Kits which make up the Birds in Snow Bundle, which will soon be offered at a discount. From an earlier discussion in the forums we took away that people liked both to be able to purchase kits separately and together, so you'll be able to choose exactly what you want, including our old method of downloading each asset individually.
Like with everything else on the site, kits are in process, so things like DC cost, etc. are somewhat fluid, and may change from time to time.
If you have any feedback on our kits implementation so far, or encounter any problems, please let us know!
EDIT: for some thoughts regarding kits and download credits and the donation system, please see this post.