I would like to know if they just sell a version with all the mods in already? Instead of wasting time doing the upgrades and mods and all that stuff.
As far as I'm concerned, most software you download or buy is simply "as is", complete with the features that the maker put in it. End of story. If phpBB fits your needs "as is", fine, if not, go buy something else.
phpBB has however tons of "extra features" that you can pick and choose from, over and above all the other software that you buy and have to accept "as is". These extra's don't cost you any money, all you need to do is be willing to spend like a week of free evenings study in order to figure out how to install a simple MOD, and from then on you're rolling.
So the way I see it, the MODs are bonuses, instead of the way you seem to view it, a DIY kit to assemble the whole software. No, the whole software is phpBB as it installs out of the box