Are you worried about the size of your market then? Because organizations that would qualify for enterprise pricing plans for a lot of these SaaS providers are probably pretty limited - Capiche?
In all seriousness, a LOT of Enterprise Software Pricing negotiation (Oracle etc) literally comes down to "what can you afford to pay?" type activities from sales reps. Couple that with super shady maintenance contracts and renewal processes and it really begs for transparency. SMBs get killed every day by sales reps who literally live and die by the lack of transparency in the Enterprise Software Space.