There is always a lively debate about where the secondary market will land after the IAW auctions finish. The market is very soft right now, especially for character costumes, since there are 40-50 of each main character.
Screen Used Props is offering up a Tom Paris costume for $ 2,999, close to double what they have gone for on eBay through IAW lately. It hasn't sold since being listed last week.
While the listing doesn't say, the costume is displayed with rank pips and a comm badge.