Actually, without comparing anything from overseas, I've been seeing some pretty good deals advertised at times from Aussie shops... Have to keep reminding myself I don't need another kite!
Realistically, we can't expect any "warehouse discount shop" to be able to offer demos on a broad range of gear as well as discount prices (as OP wishes) due to high costs incurred in making gear available for demo.
And any one shop that deals in huge volumes of gear will not be offering the type of personal service and advice either, as you might have in a local shop (if you have one).
If you have the luxury of a local shop, make the most of it while it lasts and hope that it flourishes for many years. They might even negotiate on prices if you ask nicely?