{WTS} MSX-VR

I did consider it at one time, but my soldering skills are no where near as good as they used to be! I'd have problems solding an FPGA or similar chip

This can happen in eBay, the watchers could be people interested in selling one (not buying) to see how much they can sell.

Ah well

Apart from this, you should drop down the price. If you couldn't sell at one price, try a lower one. In the end the great advantage of eBay is that you are going to sell at the highest price that someone is willing to pay.

Surely not, until you want to sell.
I don't think it will be easy to resell the MSXVR at this price. The enthusiasts have already bought the model, the cautious buyers will wait until the MSXVR has lost its infirmities.
After the negative criticism that reaches us lately, which unfortunately does not correspond to the advertising promises of the manufacturer, I understand this caution.
You yourself had a similar experience. And 400 Euros are hard-earned money, since there are already many PCs as a countervalue.
If I were you, I would keep the computer, it will certainly give you a lot of pleasure in the future.
Anyway, I wish you luck to get rid of the computer at this price.