Having cosplayed bands before with my group, it's a lot easier to just make the clothes. Because chances are they're either made specifically for the band (especially something as intricate as those jackets) or they're from a designer and it's well over $1000+. Much cheaper to just make it.
But the good thing is most of what bands wear can just be altered from street clothes. I suggest finding a second-hand leather jacket (or faux leather) and drawing on the design. It looks mirrored to me. And then finding red leather from a fabric store and sew on the accents and lining.
Hope that helps a bit!