You should look at Eastern Sercurity Safe in Mendon, MA. I bought my safe there and they have a good selection of safes including different manufacturers such as Champion, Fort Knox, Summit, Liberty Safes, Dakota, etc. They are aslo very helpful and are easy to talk to, this is what they do sell safes for guns and other items you may want or need for protecting your valuables in.
Also the gun show this weekend is in Marlborough and most likely they will have a table there and will have safes there for you to actually look at and ask questions about.
Pricing varies widely according to what you budget is and what you want (size of safe, fire rating, etc.). These guys are a good source of information even if you don't buy from them.
Good luck and have fun looking.
cda1210