We can get 76 units in Australia from Adafruit. If you order today, we can dispatch this stock between Jan 21, 2021 - Jan 24, 2021.
Each pack contains 10 x single row, right angle male 1x36-pin long headers, 0.1" pitch, that can be stacked next to each other on a 0.1" grid and broken apart easily with pliers or diagonal cutters. They're even gold plated so they wont oxidize!