I always include them in my contracts. This year may be the first I have to impliment them. Fuel was under $1.10 a gallon in January when I mailed my original batch of contracts to existing clients. My clause adds 5% at $1.50 - and prices here just went over $1.60. I will be enclosing a reminder letter moting the 5% increase in all prices as of September 1, 2003. The newer contracts (any newer accounts acquired after 3/1) received a higher pricing structure and fuel was higher, so their prices won't move until gas surpasses $2.00/ gal. I for one hope that this will be a short lived fuel hike - my 460s d 351 just love the stuff too much.