Just guessing here......
You'll still get slugged with GST on personal shopping online but it may be cheaper from the outset so you still save.
What l am confident in is that import tarrifs will be gone so importers will be able to import cheaper, and hopefully by the time it hits the shelves it will be cheaper than it used to be
Given the small market of amateur astronomy, the importer is often the retailer and that's where we should see the savings the most with lower costs and more range available.
Hopefully.