I myself am thinking 5-10 years. I wouldn't really want to own an R34 GTR right now... Too hot a commodity, they get stolen alot.. and I wouldn't surprised getting Keyed by some random jealous ricer..
In 5 years the trends will have moved on, the ricers will have grown up, or discovered that life isn't like 2F2F.. And since Motorex/RB Motoring only do the Skyline's as a side business, they'll probably still be around and doing it for cheaper.
The other nice thing is there's enough Skylines in Japan, a place where you can't drive fast, don't have alot of distance to travel, etc, that in five years we might still be able to get them with under 100k miles, maybe under 75k..
Even looking further, there's a slight chance that regulation changes might require less modifications to make Skyline's street legal, though they'll probably change for the more restrictive/expensive =/
So either way, unless I win the lottery, I'll keep it all a future dream. As for the present I'm still deciding if I'm going to restore and old caddy or get a mid-nineties car (300zx, 3000gt, camaro, etc)
Thanks to all that have contributed to this forum, not to mention my thread. This has pretty much wrapped up everything I wanted to know about Skylines. ^^
I'll keep an eye open on this forum,
-Cyphatic