Lots of great advice and I agree it's way better to do it yourself, even though all your steaks might not look perfect. It doesn't matter.
What I'll add is that if you're without a grinder, what you can do is debone it and cut all the steaks you want. Or whatever else (roasts, stew meat, etc.)
The remainder, that you want for ground meat, throw it in the freezer in zip lock bags, or a garbage bag, or however you want to do it. Wait until maybe January and then take it in to your nearest meat processor and have them grind it. Some will grind it while you wait, just be sure to call first. You can then take it home and wrap it yourself. Or if you don't mind paying just have them wrap it also.
But this way you can be pretty sure you're getting your meat back and not someone else's. And you know it's clean because you did that part yourself.