Finding the Right Tool for Lead Extraction and Email Enrichment

Hi everyone! I just signed up for this Slack group last night, and have already seen a ton of value! Specifically, I learned about HeyReach. I am currently using Dripify, for LinkedIn Outreach, to grow my connections, etc and at the same time have been struggling with finding the best tool to scrape/extract the leads (including email addresses, etc.) I've looked at waalaxy, findymail, evaboot, etc, but after reviewing HeyReach, and watching the replay of the webinar with Patrick and they HeyReach team, it seems to answer all of my challenges. I have extracted a couple sets of leads from Heyreach at this point, and none of them have email at this moment. There is a "Find Email" button, but I don't see a way to purchase credits on the HeyReach platform. As I am still very new to Clay (I submitted for the Onboarding program and am currently going through Clay University), is it the recommendation to import that list into Clay and then use Clay to enrich the data and allow Clay to find the email addresses, etc. as part of the research phase? Thank you all in advance!