the "real" dvd's i have are from hong kong, and these are probably the same as the ones you speak of that are for sale
Even the ones from Hong Kong or Ebay are rips or copies however they are good ones. If you've been watching the fansubbed Initial D from a couple of years ago, you will notice that the copies use the exact same scripts from these. They are still a good buy & worth it.
If you're a real trainspotter, only the "real" DVD's come from Japan and are released by AVEX. They don't have any subtitles however if you're one of the privileged few who owns the limited edition DVD boxset, you will also get amongst other things a bonus DVD disc which includes footage of the drift king Tsuchiya drifting around a race track with one hand gum taped to the wheel, just to prove that all that stuff about gum taped deathmatch in Initial D isn't crap and that it is possible to drift a Hachi with one hand.