This type of new Persian Tabriz could be either a 50 or 60 raj. With the silk foundation (I think), the "looks" of the rug, and your counting of the knot density, this is more likely higher than a 50 raj. In recent years, the rug industry has witnessed too much emphasis on KPSI. There are so many other factors determining the value of a rug. What is the advantage of having a personal Limo with 8 doors to a family of four? Keep in mind that the KPSI in the direction of the warp and the weft are seldom the same and that is normal. A fair market value for this rug would be $2500-$2800 for a private buyer if it is in mint condition showing no signs of wear whatsoever.

The rug has 7 knots per cm so it's 7x7=49 so 50 raj.

The $2500 is low in my opinion for a retail price. Prices in Iran have shot up in the past couple of years and people are still going on old prices, however the original prices are absurd! I'd say around $4000 would be reasonable.

I think the estimate of 2500 - 2800$ is realistic if you have stock bought 5 years ago. For today the 4000$ is still a fair (low) price for a Tabriz on silk base in this quality. If it is 60 raj, price higher is also still ok.

I do think the KPSI is very important for a rug in this quality. It is not important in tribal or antique rugs as much, but for new Qum, Nain and Tabriz it is one of the major issues of value due to the difference of production time.
If you have one m² real 50 raj and one m² 60 raj the difference in labour time is about 44% more for the 60 raj. So for me as a dealer it is a big issue if I buy a rug. And it will absolutely effect the price tag of the rug. But I would rather buy a beautiful 50 raj than a not so nice 60 raj just because it is finer.

Yes, at first sight it seems to be 20%. But follow this calculation:
1 Raj is 7 cm.
50 Raj : 7 = 7,14 knots per cm / in square 7,14 x 7,14 = 50,97 knots cm² (usually 7 x 7 even = 49)
60 Raj : 7 = 8,57 knots per cm / in square 8,57 x 8,57 = 72,25 knots cm²

Take about 50 knots per cm² and multiply with 1,44 (+ 44%) you get 72.

It is not because of the silk, it is from increase not only in lenght but also in width.

So I hope this shows how important kpsi is for settting the price of a new produced fine rug.

I can't even imagine counting that many knots...now imagine tying them on...I would charge even more!

I think it's going that way. There's no way production can or will continue the way it is with the way prices have soared in the past couple of years unless there are big changes in the industry.

Unless people start viewing the rugs as a serious art-form, the same way they would with sculptures and paintings, then I can't see weaving continuing in its current form.

People have stockpiles of rugs around the world, there's probably hundreds of thousands if not millions of rugs in dealers' galleries and warehouses, so to an extent the current price increases may not seem so drastic immediately - but the dilemma is do you sell your existing rugs at their old prices knowing that you'll not be able to replace them or replacing them will cost around what you're getting for them?