I've had one in my saved searches on eBay for a while. The only thing putting me off is all the electrickery inside it. Prices are silly for something that could brick if you bumped it.
Also there are rumours that the RF was "unreliable" and not always accurate.
I live in hope of seeing one for £9.99 and as none of the trendy YouTubers have done a video on them recently it's obscurity may well create a lucky bargain hunter one day. I love 645 as a format. 16 images per roll and the 4:3 aspect is perfect, and I don't need a bigger negative size.