Hi David! If you're after a printed copy of the book, you can pick up a print on demand copy in softcover or hardcover over at DrivethruRPG
https://www.drivethrurpg.com/product/279561/Impulse-Drive?src=hottest_filtered
The hardcover is really nice, but I definitely find the softcover version easier to flip through if you want to look something up real quick.
You can also check out the cards, which are a nifty way to track the status of gear & cooldown-based Moves. The shipping for the cards outside of the US can be pretty pricy though!
https://www.drivethrurpg.com/product/257378/Impulse-Drive-Card-Supplement?src=hottest_filtered