must setup my mysql script connect to db and get prices only once[homepage] ?

[lse123]

If in a car rental auto system[in php/mysql] or a real estate company is needed for my client to login and change prices ....then when somebody enters the site I must setup my mysql script connect to db and get prices only once[homepage] or in every webpage I must repeat connection to db ?

[Fumigator]

If I understand your question (which is doubtful), you are asking if you can carry the product pricing across a browser reload, rather than query the database every time the browser gets reloaded? You should look into the server-side language that you use, not MySQL. (PHP for example uses sessions to do this.)