Ebay does sometimes have power hacksaw blades for sale. I got some that way years ago to make kitchen knives from. Mine were all-hard HSS. Most are soft bodies with HSS teeth,so they won't shatter and injure someone(liability issue).
I doubt that bandsaw blades would be suitable for a power hacksaw. They are not nearly stiff enough.
In any event,I would NOT waste my money on a Grizzly bandsaw blade. I DO NOT think using a bandsaw blade is the way to go. But,if you must,AT LEAST try a Starrett bi metal bandsaw blade 1" wide,with HSS teeth. They are fairly thick. Lots of fun trying to get one to lay FLAT,with no curve to it. !!You should be able to drill the soft body. If you can't,use a small carbide masonry bit. Run it fast. It will melt its way through even a file. But,be careful to not push it too hard,or the brazed on carbide bit will let go and fall off. I have drilled even SOLID HSS blades with cheap masonry bits. Buy 2 while at the store,so you can learn your lesson on the first one,should the carbide bit melt off. REALLY!!
I think you should sell the power hacksaw and buy one of those little 4" x 6" tilting bandsaws. I have 3 bandsaws,but still have my first one,a little 4x6" one. It is handy for cutting off rods and general work. With the SMALL teeth,I never have a rod to cut off that is smaller than 3 of the teeth. I save the Roll In saw,with its 40 dollar bi metal blades for larger work.