Go to DL lady, screen shot DL piece X, go to AH, screen shot Vanya HQ piece X. Melding multiple IV onto Vanya will run you an extra 150k/materia. Not counting the guy you have to pay to meld it. You could do all of this yourself though for less than a tenth of the cost in a relatively short amount of time and set yourself up for when the lvl cap is raised and all of this gear is worthless.