Less of a deal more of a PSA considering people were upset about the Amazon Mewtwo ex box being cancelled.
There's currently stock at JBHIFI online for destined rivals with a 12 pack limit at $8 per pack (technically 50c cheaper than retail per blister pack). Better value then the Mewtwo box anyway. Also scalpers are flogging their stock on eBay like crazy rn and you can get a good deal there for sure! The DR etbs are basically going for retail on there.
Beyond that I've noticed a few stores do have the stock for destined rivals but they aren't listing it on their website for either CNC or delivery and aren't showing in stock on their stores. BIG W and Target have both had a ton of stock when I walked in, and I've only checked them once. Target had limit of 5 per pack but big w didn't care I could have walked away with the 40 odd packs they had (I took 10 and got nothing lol).
Best bet is to get out and have a look in-store!
Food for thought - Banter (the Australian distributor for Pokemon TCG) was the one that increased the price of booster packs.