Savings calculator - WP plugin (or otherwise if that's not best!)

Hi there,

Looking for a WP plugin that will calculate savings. Well, perhaps it doesn’t have to be a WP plugin so I’d be interested to hear any suggestion on what is best really (the site it’s going on will be WP though).

There is a similar calculator on this site (bottom left of home page) - Screenshot also attached.

Doesn’t have to look the same (although that would be fine), just do the same thing.

If I’ve missed anything important please let me know!

Thanks in advance :smile: