Replaced an older vendor with this. Catchment overlap with our existing CRM was minimal — almost all net-new leads. Bought it for a Australia-focused tailor territory cut. Money well spent.
Ran the CSV through our deduper first. Imported into HubSpot in two clicks, every column mapped automatically. Bought it as the seed list for a tailor outbound push in Australia. Decent value, would tighten one or two fields.