CRM with ROI from blogs, fb, Google ads

Hi – We’re a small company and recently came across Hubspot’s marketing professional plan that can help us measure metrics from Google ads, Facebook, blogs, Linkedin, and other social media sources. This is great, but $800 per month is way above our budget considering we’ve never used a CRM and are just starting out working with a marketing platform.

I’m looking for any alternatives that can help provide a snapshot of spend in addition to a solid but easy to use CRM with email nurturing. Thx in advance.