If you try the free options (LoudMax is your best bet) and still feel limited, the paid L2 is currently available for around during Waves sales. However, be aware that Waves requires an annual "Update Plan" fee. For most home studios, LoudMax + Limiter No.6 will outperform the 20-year-old L2 algorithm.
Sonic Anomaly closed up shop, but their plugin is still available on legacy archive sites (like Audio Damage’s archive). It features a "Pre-comp" and "Transient" section that allows for even more control than the original L2. L2 Ultramaximizer Vst Free High Quality Download
This article will explain exactly what the L2 does, why you want it, and—most importantly—where to find that deliver 99% of the same sonic punch. If you try the free options (LoudMax is