I am certainly no lawyer but it is important that you investigate what you legally need to put on your web-site to cover your back. Depending of your area of business there may be restrictions and / or special actions necessary to take.
A small snippet like the one below might be minimal but always something to add before you investigate further.
“The information, details and rates on this web-site are only general information for the public and not contractual. All information is given in good faith and although believed to be correct they are not guaranteed.”