I would say that I buy 90% of my consumables and products online.
I never pay attention as to whether the site has the address http or https
I was about to my sites with "Secure transactions and customer data with SSL certificate "
Now I know I have a "shell be right " attitude but I know a lot don't
So The question
Do you expect a business , shopping site to have a SSL certificate?
Do you bother to look before you make a purchase?