Being someone that is or has crafted both, I can say that the Tome is a good deal more expensive and difficult to make. It requires a ton of lead that is hard to get all of, even if you are extremely rich and can buy any that you see. The barrel, on the other hand, is mostly dependent on HM and Sulphur, which are a good deal cheaper and easier to get to.
If you do it completely based off of crafting costs and assume you can buy an infinite amount of everything at set prices, the tome is actually slightly cheaper, by about 100-200 thousand.
So... Up to you
If you do it completely based off of crafting costs and assume you can buy an infinite amount of everything at set prices, the tome is actually slightly cheaper, by about 100-200 thousand.
So... Up to you