Quote Plugin

I was wondering if there are any ‘quote’ type widgets or plugins that anyone is aware of. I am looking for something that would work like the quote box on the right hand side of this site https://www.curtainsonthenet.com.au/

I assume it would be database driven whereby you could enter some variables in the back end (ie: dimensions & prices) so it could spit out a rough quote after a user enters in their desired sizes.

Hopefully that makes sense.