Anyone have any experience with Multiple Page generator?

Just found this cool plugin named multiple page generator, it helps the user create 100s of pages just from one. For example, if you have a page about "best plumbing service in {city}’ then if you have a list of 100 cities, this plugin will create that page for all those 100 cities.
I found this cool from an SEO perspective, for e.g: If I’ve to target 10k+ small Indian cities I can do that with it.
But before buying it I want to know if anyone got any experience with it?