Hi & welcome to SRP. The razor you bought depends if you can set a bevel like the others said. If not, you got a letter opener. If you have honing experience then go here:
Bevel-setting in theory and practice - Straight Razor Place Library
See if you can accomplish this but if you don't have experience, send it out & an assessment can be made as to whether it is worth trying to save. Even if it can be saved, you will lose some metal. Don't give up though & ask questions & for help. Cudarunner has a couple of razors at the moment that are shave ready that he'll sell you & they are shave ready. If interested, find him here:
http://straightrazorpalace.com/members/cudarunner.html