Goldwingfahrer is not a native English speaker/writer, so sometimes his translations are not perfect. But he often does give excellent advice. His posts were mostly about the exact models, and weaknesses of them (ie, he considers the 9700 to be a lesser machine than the 9800). He went on to mention that unknown condition (ie, capstans, drums, capacitors, etc) can reduce value. Finally, having it professionally inspected may be required (although I'm not in agreement with this).
^ So that's what he meant there, as I read it.
Now, here's my info...
In the late 90s, street price for the JVCs was about $465, and street price for the Panasonics was about $680.
These days, quality JVC S-VHS decks never exceed $500 in mint/new condition, and Panasonic never exceeds $700 in mint/new condition. So nothing has really changed, and inflation is ignored.
However, a new-old-stock or mint/like-new (complete in box, etc) deck is rare. Most have been used, and used JVC decks go for $250-350, and used Panasonic for about $300-400 when refreshed with new caps. Lesser condition is worth maybe $100-$200.
That's average pricing in the 2010s.
Convert USD ($) to other currency at xe.com. But understand the valuations are similar within $50.
Items on our marketplace forum do sell -- especially the VCRs. Unlike eBay, we're free, and this site gets enough traffic to make it work. We'll approve it when you list it.