Right, it's your choice, really.
I personally like previously used razors, especially the ones that come from people who shave with them. I think right now I have only one razor that I broke the seal of the box, and it's likely not going to stay with me for too long either.
Even my custom made ones were honed and shave tested before they came to me (my choice, of course).

You should get your razor honed by somebody else though. Won't have the 'brand new' thing in it anymore, but at least it'll shave.