Reasoning
Across multiple sources (Trustpilot, EmailToolTester, PCMag, EmailVendorSelection, TechRadar) the prevailing sentiment is that HubSpot's pricing transparency is limited, with frequent mentions of hidden costs and inconsistent terms. While some entries use stronger phrases like 'not transparent' or 'very low', the most representative and recurring conclusion from the broader set of sources is 'low' transparency. Therefore, 'low' best captures the consensus.