You will likely want to hire an electrician but, there are some youtube videos on how to re-wire a box with no neutral wire: https://www.youtube.com/watch?v=-ictADG2xQw&t=208s

You could use camelcamelcamel or an equivelant Amazon price watcher site/plugin. You can also use slickdeals to setup an alert for when it goes on sale. I have purchased all of mine from Amazon so...