Figure I'll sell them as I slowly climb the ranks. Right now I have stacks of IIIs and IVs. Is there a general price table floating around?

im in the same boat as you, t3 and 4s, i can get 0.3-0.4fg per t3 magical and 0.5 fg per t4 mag
for rare t3s ive seen about 0.4-0.6 and so on

t3 magicals seems to be 0.4fg and t4's around 0.6fg as far as i have seen, i could be wrong. but thats the prices ive seen.

perhaps i didnt wait long enough on my last stack when selling but interest faded at 0.3 considerably.... BUT the good news atm is that we got a suff heavy event that just started so they may command a higher price for a few days