Well I am up late, again. I was doing a search for water crystals and came across this site.
Watersorb water absorbing polymer prices

I read through the pages, read some about the cool ties and then I went to the pricing.
It wasn't the prices per say but the options that caught my eye. I have never seen size options for water crystals.
I don't know if the size of them will make any difference but for certain applications I can see the different sizes being useful.

This may turn out to not be very useful to most but I had to share just in case.
The prices aren't bad either.