Right now there doesn't appear to be a heavy premium, but on the other hand they're not losing value either.
That particular one is a very desirable type: 4.68" barrel, stainless (unless that camera is pretty bad?), ivory micarta factory grips, no obvious mods and you still have the yellow protecto-ring.
It would surprise me if that doesn't net over $400 and possibly closer to $500.
Poke around gunbroker/gunsamerica/auctionarms and see how it's going. It's also a regional thing. But there are a few people out there snapping up the bigger-frame Vaqs who either want the full power level available or have bigger hands.
Hint: it may raise the value if you slug and measure the cylinder bores and barrel and publish what you've got...if the cylinder is a "squirrelly" (has multiple sizes across the six bores) do one of the low-cost cylindersmithing jobs on it. But it looks to be late-production and if so probably isn't bad now.