There was some commercial for the Commodore 64 which basically lambasted the IBM PC for being twice as expensive while having the the same 64K memory.

I was, like, "yeah, but nobody ever bought the 64K model of IBM PC. That would have been just ridiculously limited, right? Right? Everyone got memory expansions, surely?"

Well, 64K was the stock configuration, so I'm sure those memory expansions sold like hotcakes. There was even the option for freaking 16K memory. (Now, I'm sure next to nobody bought that.) Even option to getting no floppy drives, because you could always put your glorious BASIC programs on a cassette tape. Like a caveman. (This also sounds like a rare option.)