Welcome David and sorry for the delay in replying.
I've been away for a few weeks and not paying attention, and as you have discovered, traffic on here has virtually dried up, as most people use our Facebook group now. There are always a few turning up for sale on there, and usually a few on eBay too.
Supplies are more liited than they were, and that is reflected in the prices, which have risen sharply over the past few years.
All depends on what you're looking for, and how much you're willing to pay.
I've had mine for 18 years now, so they can be addictive; others get fed up after a couple of years, and move them on.