THE MOBILE DILEMMA

So here is my dilemma. With gas prices up to $4.00 a gallon here in San Jose, CA, I'd love to be able to increase my travel fees for mobile notaries. However, the competition is fierce amongst notaries here as well. There is a constant state of undercutting that occures due to a saturated market. I have developed a pretty substantial book of business and I'd hate to loose a single client. So my question to you all is, have you had to deal with this? Have you lost clients do to increased travel fees? Your thoughts please.