I would have to disagree with this mate..
R34 gtrs are really hard to value, the market is getting flooded with absolute sh!t examples (crashed, rusted etc) which is bringing prices right down. People see that one sells for this much and think they all should. The difference being I believe the condition really has a big effect on the price, as if I was gong to buy another 34r... I would pay more for a non vspec that was a really good example, than I would an average vspec, or vspecii etc..
If you look at good examples in Japan, grade 4.5+ genuine low km, they are being sold there for 40-50k, which makes them too expensive for importers, therefore a market here flooded with sh!t.
I do agree with the price you stated above if a quick sale is needed though, in today's market, if I was to sell mine, I would be expecting a fairly lengthy sale for the right buyer to come along and see the value in the asking price, and I wouldn't sell it (non vspec also) for less than 50k if I had the liberty to wait.
Just my 2cents... As for the OP, best of luck with the sale, car looks great!