Moving On - The biggest drawback to an otherwise promising system is that some folks don't know when it's time to move iris online. When I attain 30th level, I will move on to the next tier and leave the 3rd tier behind me. Why? Because that there are other promising artisans that need to run their own businesses.
There is no reason for me to monopolize on their profits and gains. That would be selfish of anyone to do so. By moving on, I stay ahead of my learning curve and also stay on par with the customers I have been dealing with for a long time.
The ones behind me will find their own customers. And the system will continue fluidly.
Closing - In closing, if you follow the advice I stated above, you will have a successful business in Everquest II. You will also have a lot of tells.
I think I get from 7 to 10 tells now per 30 to 40 minutes and during sales time I am answering up to 6 tells at once, talking with 4 to 5 customers on the floor, and answering questions in the crafting channel. This is multi-tasking at extreme. Not to mention guild chat.