The annual Liv-ex en primeur survey found that 78% of merchants expect "significantly less demand" - down by at least a fifth - for 2013 wines compared to their 2012 counterparts.
Additionally, release prices are expected to be down 10% on 2012, but remarkably prices are still up 26% compared to the prices of the 2008 vintage.
The Liv-ex survey canvasses its 440 members, the world's biggest buyers and seller of fine wine, for their opinions on the latest Bordeaux vintage.
With demand predicted to plummet by more than three quarters, a few respondents reported no demand at all at present and possibly none to come, with prices once again a concern. The Liv-ex blog stated: "One merchant stated that the only demand was for those wishing to commemorate the birth of their children, with no interest from consumers or investors."
Yquem, Mouton Rothschild and Margaux were voted as the top three wines from Bordeaux 2013. This is the first time that Yquem was voted the number one wine and this year also marks the return of Mouton to the list - it missed out last year.
The top three most disappointing wines were Margaux, Lafite Rothschild and Cheval Blanc.
Margaux rose four places on last year to come third, but was also voted most disappointing wine of the vintage, which Liv-ex said shows "the divisiveness of the 2013s".
Also according to the survey the 2013 First Growths were voted the worst out of the 2007, 2008, 2011 and the 2012 vintages by more than half (51%) of respondents. The 2008 vintage was voted the best vintage by 57% of the respondents.
Grand Puy Lacoste topped the "value for money" category for the fourth year in a row, followed by Calon Segur in second and Domaine de Chevalier climbed one place to reach third.
Using Parker scores, the vintage as a whole scored an average of 88 points, with respondents awarding between 77 and 93 points.
The 2013 vintage has put pressure on producers who participate to reform the en primeur system. Several high profile critics, including Tim Atkin MW and former Decanter editor Guy Woodward, have described the system as a "sham" in recent weeks and called for it to be overhauled.