Why can't I make my own site?

You can, of course... provided you have the time, the patience and the knowledge!

I'm going to use an online website creator. Surely that would be cheaper?

I would never recommend using an online site creator. They are very limited, slow and not even cheap, especially when you consider the time you spend. The end result will not be pleasing. and will present a "cheapskate" image for your business.

I'm detemined to make my own site...

Invest your money in a good web editor i.e. Macromedia Dreamweaver or if must, Microsoft Front page. Then be prepared for hours of work...when you've had enough come to us!