While trying to save money is always good, you really should not bottom feed on your hosting. Save money somewhere else, your whole business is built on your hosting and crappy hosting can kill your business. It is like building a house on sand, it may seem nice at first but when it starts sinking and falling apart you find out that yes it would have been a good idea to invest in a foundation.
Also you guys doing those one click install should really rethink that practice. When you do those easy installs everything is set at the default which from a security point of view makes your site vulnerable. Wordpress by default is not really all that secure, it does not take a lot to secure it a bit during the install and you are better off doing so.