Yes, some things are priceless. The OP might have been like that Mastercard commercial in the format of such and such: $xx.xx - Knowing TTATT - priceless. Well, actually I guess that may just be disappointing, but other things you learn as a result of opening your mind may indeed be priceless.
So while I do not disagree, I have to mention that I can't help but think of how similar it is to count hours as it is to count dollars via the time is money rule, but not everything is a matter of quantification. Imagine in an alternate universe where you do make good money by being a JW, (yes I know you have to really stretch the imagination) verses being poor knowing TTATT - would you do it?