If ESET Internet Security is too expensive, consider the entry-level ESET NOD32 Antivirus. It is cheaper and provides the same core antivirus protection, lacking only the firewall and parental controls.
This isn’t a full Internet Security suite, but for basic users, it covers many gaps.
: In some regions, users can extend their free trial license for up to 6 additional months by referring ESET to friends and family. ESET Mobile Security