Agreed, while he has impressive highlight reel moments and scores the odd screamer that invites a wrist-slitting bump over here, whenever I've seen him I haven't been completely convinced that he's worth the 80mn euro fee or whatever as yet. He's not yet in that bracket of player though he may well be in a year or two.
I feel a lot of people are missing the point with Pogba in regard to what the fee for him is based on. If Pogba were at full potential, at 23(!) years of age, the only player on the planet who would be worth more is Lionel Messi. Pogba, at full potential, is in the Zidane bracket of ability and highly likely to go down as one of, if not the, player of his generation - few would argue that from a talent POV, he and Neymar look like the next two WPOTY rivals once Messi and Ronaldo age.
The Pogba that any potential suitor is looking at needs work and has yet to fully develop his understanding of the game, and yet, his talent to date puts him in a price range rarely even considered for a midfielder.
The question you have to ask about what he is now is how much he can contribute to your team as well as what you're prepared to do as a club to accommodate his game, warts and all whilst providing a platform from which you can have a mutually beneficial relationship that allows him to fully mature.
Pogba's 'worth' has to be broken up into key considerations: Current ability; potential; age; trajectory; brand/profile; fitness; equivalence.
He scores extremely highly in every single category and that obviously means you pay a premium. If he reaches his expected level over the next few years, he'll be worth at least a third more than whatever he currently goes for, very possibly double. Even in three years, he'll only be 26, and if he's still had no injuries and becomes an all-time level midfielder, the fee paid now will look like a steal.
It's up to the buying club to evaluate the risks involved and assess whether he has the personality and inclination to make good on his potential, but the fees touted for him, even as an incomplete player, are warranted. It's extremely rare for a 23yr old midfielder to be so ahead of the curve; Pogba's trajectory really does put him in the most elite company from a historical standpoint.