Getting users signed up for Wispri?

After working for more than 10 years in e-commerce, I have realized that prices change frequently on online sites. You need to be at the right place at the right time. This made me to build up Wispri. I started Wispri - price monitoring and alerting website for Australia.

Its easy, just copy paste any product URL you need to monitor price and get alerted on all price drops or only for the desired price drop. Wispri uses Machine learning on the backend to fetch price and other details of the page.

Yes, Its just that SIMPLE :)

I have started FB campaign and simple SEO tasks, but unable to get users signed on. I have been live for last 3 weeks and able to get in some 15 sign up's.

Are there any suggestions or tips the community can help me with?