Don't use the gold booster at work!

Day 1,151, 12:47 Published in USA USA by Pearlswine

It's much better to convert the gold you'd be using on a work booster into USD and use it to purchase whatever item you'd be making off from the market.

For the economic gold booster use to be profitable, I've created this handy chart. This price of raw materials must be greater than the value shown for work booster use to be profitable using the current gold conversion ratio:

Skill Level 50% Booster 200% Booster
1 0.29 0.32
2 0.26 0.29
3 0.24 0.27
4 0.22 0.25
5 0.21 0.23
6 0.19 0.21
7 0.18 0.20
8 0.17 0.19
9 0.16 0.18
10 0.15 0.17
11 0.15 0.16
12 0.14 0.15

If you're after a faster skill up, it'd be best to save your money and purchase a company.