Bolt Rifle Mounting base Rem 700

Cheap ones can be out of spec, which in turn can torque your scope and create nice ring marks. There are good inexpensive bases, though. I recommend the Weaver Tactical bases (20 MOA if your scope allows for it). Regardless of how much you spend on it, if its going on a 700, it should be bedded.
 
Not all bases are created equal...Temp9 makes valid points. I would stick with one piece bases and yes, bed them.

More affordable, and decent quality:
Warne
Weaver
EGW

Top end:
Badger
Seekins
Nightforce