My take on this would be to see what your ISP includes in your Internet connection. Usually there is sufficient web space for a fairly static 'brochure' style web page. Good enough to list services and contact details. Sometimes you can for a small amount say 10 GBP purchase a domain and have your ISP host it.
But even if its is static you can add more features by using the nice features that Google and yahoo give for free or at least in exchange for your information. They provide simple embed code for you to copy and paste into your html.
Some example ideas
A google spreadsheet tracking items for sale, prices and stock
A calendar showing opening times
picture galleries and blogs showing that you are actively working
A form for capturing lead contacts and tracking jobs
If you have the energy my recommendation is to use something like WordPress which is simple to use once set up and looks good on all devices. You can edit from smartphone, tablet or desktop/laptop.
Just some ideas. Please let me know if I can elaborate further.