Hi Piers,
Hang in there and trust the energy will come back when you have a chance to rest.
On rare or uncommon items surfacing, I have noticed this across the board in multiple hobbies and collecting groups...I will speak factually, from a US perspective on the timing and possible causes: 1) tax season (people pay in or may be awaiting a refund, etc.); 2) inflation which has been consistent and years in duration, increasing further; additionally, inflation has impacted literally everything, be it day-to-day items (food, groceries, bills) to property, rentals, you name it.
It is my opinion that these factors are causing a buying opportunity in a number of markets.