As it's a new item, and people are looking to capitalise on this the price fluctuates wildly, and always starts high.
Estimated cost of production from guild items using non heavily inflated prices, assuming no breaks or HQ:
** ROUGH PRICE ESTIMATE ONLY **
1 Stack (1200 gil in cotton threads + 800 gil in cotton cloth + 100 gil for a crystal)
**Prices will vary on each server, I'm basing this off the Unicorn economy**
Total cost for a stack 2.1k
Individual price 21.21 gil each rounded up to 22 gil each.
Toolbags 2.1k X 1 + 200 gil for Winjinruit = 2.3k
Toolbag stack price 2.3k X 12 = 27.6k
I'm guessing the prices will settle to something around these marks after a month or so and the prices of cotton threads and cloths have recovered.
Currently the prices are 205k (average sales) for the toolbag stack, 17,083k toolbag singles price, and for the Nin tool on it's own the average price is 10.6k
Again the prices of over inflated cotton have driven the end product up, and I have noticed a marked increase in other tools and items that require the cotton.
Summary
Upon recovery
Stack of tools 2.1k
Single Toolbag 2.3k
Stack of 12 Toolbags 27.6k
Enjoy