The explore page is free and always will be. The main site shows real time changes too, just capped at a few recent ones. The $50 is for the full feed, alerts, search, comp data. Comparable to other sales intel tools but I hear you on letting people try more before paying. Gonna work on that.
Would you consider making a stale dataset (3day, 1 week, idk..?) available for other projects (but also protect your revenue stream?) I assume the value in the paid option would be real-time updates but I'm not sure exactly what the target consumer is