Over the past three years making hair, I've ended up with over 3000 files on my PC just for hair. I know I had a lot, but didn't think it was that many.
Why so many? I use a lot of different textures on different styles. Often times each style has a new or a couple of new textures and take that times 50 colors per style. Often times I end up uploading 100 textures for new hairstyles which amounts to 1000 Lindens in upload charges. That doesn't count the sculpt maps which is what I mainly use for static pieces of hair.
Now I have a headache just thinking about it.