No one is answering this because these are not sought after items, and not ones that people will go out of their way to
a) purchase
b) price check
c) investigate.

The pricing probably varies by a few thousand crowns at any given time, and while a few thousand crowns isn't much, its actually a substantial part of these low-end items total value. Thus a generic price quote won't be of much value to you. Check the auction house for these items with these UVs (or like items with like UVs) and price yours competitively.

Sorry this wasn't more help, but the truth is, you are not asking for a price check on a rare antique, but rather a gently used toothbrush.