Cheap SSL is good thing to secure your website, but please note, when you run Online shop, the best way is to use expensive EV (Extended validation) SSL with GREEN Address bar. It requires validation of your company, but the result is very good, as you will get:
- Green address bar
- Dynamic SiteSeal (Trust logo)
- more trust, Symantec company calculated that EV SSL increase sales for at least 17,3%