Hey Jessica, thanks for reaching out and the excellent question! So yeah, tables are considered individual spreadsheets and each enrichment considers each row a unique run, so providers would charge us even if it finds the same person again.
To prevent this, there are a few options that don't charge credits to find people, find companies, or find jobs from LinkedIn. Before enriching them you could use a Lookup record in another table to check if they already exist, and then use that as a condition. Here's a video about the lookup record integration if it helps- https://www.loom.com/share/72f4e67e20424ba7a784ca9a5056f1a9?sid=0194f8b1-d773-4aaf-a40b-dbb34c279656
In the video for the look up record, can you search multiple tables at a time for the look up? Or would you have to do look up one at a time for each table that you wanted it to search an existing contact for?