This is the reason I buy very little from HK these days- example-
Price of a TGY 4s 40c 3000mAh LiPo at December 2016 was NZ $31.88
plus shipping from Aust (NZ $13.30) = Tot NZ $45.18
Price of a TGY 4s 40c 3000mAh LiPo at February 2021 is NZ $57.87
Plus shipping from Aust (NZ $58.36) = NZ $104.54
This is a 129.1722% increase in 4 yrs , (and that's just batteries) - who else thinks we're being severely shafted? I can buy much better quality batteries (Hyperion) for not a lot more locally- without the hassle!
I think that the Aust warehouse is having a lend with those shipping rates! I recently bought a new power steering hose from Aust for my old Cressida and only paid about $25 freight,- and it was a large package (about 2ftx2ftx4") which weighed more than the battery. Only things that seem reasonable are smaller items (although I just had to pay $10 freight for an $8 item (some small tailwheels to use on the boat trailer) Anything from HK Aust costs a spleen in shipping now also, sort of $18 plus for the smallest item.
I think, now that they know they have converted us to electric, and most people have got rid of their IC motors (or converted to electric), they are starting to whack the prices up. I'm almost considering re-converting my planes back to IC (kept all my motors in case this happened) as it has now gone the other way, and IC is cheaper than electric (you can buy about 4 liters of fuel for the price of 1 decent battery and fly a lot longer with no charging, storing worries etc,- just grab your plane and go anytime. They are also safer,- will never run when you turn the TX on, or bump the throttle with the motor stopped, Noise is really the only problem, but a good muffler can do a lot. A lot of small fast electrics are noisier than IC planes anyhow. I think scale type boats have the advantage due to the clean easy power, and the ability to use a bigger range of batteries, but some fast brushless boats are also earsplittingly loud, (hard to have speed without revs).
I actually said to a guy about 10 yrs ago that this might happen. It will be the same with cars, once they get lots of people into electric cars, everything related will go up, as the service centres, garages etc won't have the repairs they have with IC cars to sustain them, -plus you won't be able to do anything yourself to save money, as it will all be specialised, - it's getting that way now with modern IC cars, (that's why I'm hanging onto my old Toyotas as long as I can)