Honestly (and as you know), it totally depends on your server.
I have friends on other servers who are enjoying big profits from big price spikes in truegold.
On my server, there hasn't even been a minor blip in the price, upward or downward, for weeks...even though there are now plenty of people crafting the new items.
There are just too many factors at play for me to feel like I can give you an accurate or reasonable guess as to what your own situation will be.
Good luck with the new internet connection, and here's hoping you will return to truegold profits