I guess we agree to disagree, since I believe people who are willing to pay for training lessons usually have put in significant time in the game. 500k is good, but I think your estimation on the time required is quite pessimistic. With the extra tick at 6:30, valor , etc, I believe someone with light gear can make 500k in 2-4 gens, a small fraction of exp of a level 34-36. I wonder how much the devs think it should cost..
2-4 gens is a long time of playing in light gear to make that 500k. Imagine, then, trying to make 3 million instead. Based on your numbers, it would take 12-24 gens to make the current cost of a respec, if we don't consider selling the loompoints from retiring(which we shouldn't, if you're only using the character you're trying to respec to make that gold).
500k = 2-4 gens, on average equals 246 hours(x2 multi average)
3 mil = 12-24 gens, on average equals 1476 hours(x2 multi average)
So with prices as they are currently, you'd basically have to play 6 hours a day, 5 days a week for a year to be able to afford to respec without selling looms. Reasonable? I think not.
So yeah, if you still think that's reasonable, I agree to disagree with you.
EDIT: Also, including valor is assuming the random person we're talking about is good. That's an unfair assumption to apply to the general population. If everyone were you, who is obviously excellent, it might be an easier pill to swallow. Not everyone can rock a x5 all day long, and that makes a big difference in how much you make. And the 6:30 tick only makes up for all the rounds that end at 4:02, where you don't get the gold tick for the other full minute you played.