Hi there,

What you're looking for is a corporate identity package. Standard Web based logos can go from anywhere from $30 upwards.

I can't speak for the others, but with me a Corproate identity package starts from $160 which includes a customised vector logo (high resolution - can be used for prints) - A business card design (CMYK based) - A letterhead and an Envelope.

Depending upon the company you can be charged anywhere from $150 to $800.