at least it does in the web site business. Very few (if any) companies are going to pay you a penny for a link to their site - not unless you can show them concrete evidence of very high traffic figures. Concrete evidence - in this context - means an audit of your site traffic by one of the industry-repected audit companies, and it's not cheap.
If you have such evidence already then by all means impose a charge - otherwise forget it. Far better to look to reciprocal linking arrangements, whereby you link to a site and they link to you - that way you stand a chance of sharing some of their site's traffic, and vice-versa.