I would say old oop prices are the same than last year, more or less. I have noted some are cheaper, but few. And others have jumped of course.
The actual surprise is the price of old armies only available from the Games Workshop's VPC : Bretonnians, Dark Elves, Vampires, Lizardmen, Daemons, Skavens...
For those armies, approx all the blisters have jumped to a price over frequently 20£. Even 30£ can be a common price for some crucial units in those armies.
I'm unsure if those price will stay. I was hoping they would be back at less than that today, but time has proved i was wrong.
The good new could be that some people wanting to go into warmaster for long time now, seeing the figs where discontinued, has jumped on to seize what could be still found. Prices have jumped, but maybe those people will add to our community. Or not.