I am not going to comment about Pogba, because honestly i dont watch a lot of Serie A , so i can not really judge him.
Is he better than Bale? CR? Messi? no idea
BUT , one thing you both need to understand, a player VALUE is NOT DIRECTLY linked to his ability to play. ALOT of this comes from his marketability and how much the club can make from him. Do you guys remember when Real got Beckham? everyone said stupid price tag, yet Real made that money in the FIRST year from Jersey sale. I personally think CR Value should be higher than Messi, (even though for me at least Messi is clearly a better player), why ? because CR marketability is AMAZING. Everyone know him, but if not as much know Messi. Most Messi fans are people who actually like and watch football, but you see teenage girls in China having CR poster etc.
Now to Pogba, personally I dont think he is as marketable as CR , so his value should NOT be what it is , having said that, i am not sure about his skills, judging by EURO ONLY, It didnt impress me, but then again you cant judge a player by 7 games.