Purely in an economic modeling sense, if everyone buys something, it's probably too cheap. . . .Then again, it's more expensive than ranks in Chi Defense which it most resembles. . .way more expensive. . .of course, it also avoids all the limits on chi defense too.
shrug. . .I've always felt that skills in a general sense are freely available for purchase, with a few exceptions that require a teacher, while a talent actually requires an explaination sufficiant for the GM to allow it.
Most PCs, when they hand in a character background for a 1st level character. . .it reads like the background of a 10th level character. . .everyone wants to be a jedi, nobody wants to be a marginally competent padawan. . .
Odds are, for most backgrounds, the character wasn't raised in a level of constant threat equivalent to the childhood of a wild animal and they're not experienced, instinctive combatants (if they were, they wouldn't be 1st level).
Could perhaps the problem here be that the GM wants the characters to follow a "reasonable and likely" background to character sheet association, but doesn't enforce it with a simple "Justify this talent based on your background" combined with a "This is you at 5th or 10th level, give me the background of you at 1st level".
Based on my own experience, I'm fairly confident that if you were to go back and read the backgrounds of the last 10 PCs submitted to you as a GM (or that you handed in as a PC if you don't GM) and asked yourself the question "What level would this character be, based soly on this background, if I were creating them as an NPC?" . . . .I bet you the answer there would generally not be 1st level.
If you were to force the players to adjust down their backgrounds to match 1st level, it gets a lot harder to justify a lot of things that seem to become acceptable with the inflated "sounds like a 5th or 10th level character" backgrounds.