I need to get my Joomla based website updated to the most recent version of Joomla

General information for the website: We offer unbiased information about cosmetic surgery and have a directory of the leading cosmetic surgeons in the UK
Kind of development: Customization of existing website
Description of every page/module: The website (safercosmeticsurgery.co.uk) is currently running Joomla 1.5.26, which is very old. We want to update the website to the most recent version of Joomla.
Description of requirements/features: As above, the website is running Joomla 1.5.26 and we would like to update it to Joomla 3.3 if possible.
Extra services needed: Domain, Customization, 3rd party integration
Extra notes: We would like fixed price quotes on how much it would cost and how long it will take to upgrade the site. Please have a look at www.safercosmeticsurgery.co.uk and let us know your thoughts. Thank you.