VPI TNT MkIII - pluses and minuses?

I'm considering a used VPI TNT MkIII. The seller says it was produced between '95-'98. I know nothing about VPI tables. What should be the reasonable value of such a VPI table that's reported to be in excellent condition?

And could the potential performance of the VPI MkIII be exceeded or equaled by current model TT's selling at the market value of the used VPI TNT MkIII?

Thanks in advanced for the assist!