You can go from 100 bucks for a Behringer to 3k for a Neumann however don't expect to plug one of these suckers into your sound card as they will require +48V dc phantom power.

I have a Shure KSM44 and an AKG C414 BXL II. These are both in the 500-1000 bucks range and sound very nice for both vocals and guitar though you need to remember not to turn the amp up too loud !

You may also want to think about a preamp which you can run into an A/D converter. Again these range from a Behringer Voice master pro (at about 100 bucks) to Manley and Nerve kit at the top of the range.

I have opted for two very respectable units one tube (Avalon vt373sp in the post) and one solid state (Focusrite Platinum Voice Master Pro). These pres are great for recording vocals / bass / guitar direct.

These bits of kit are not really for road use as if Im gigging I like an SM57 to sing through / mic cabs with.