Best option is to have both. Some fixed starting prices and then Custom/Enterprise/Contact us. That's what we do for my SAAS where we start at $599/Month (B2B)

Best option is to have both. Some fixed starting prices and then Custom/Enterprise/Contact us. That's what we do for my SAAS where we start at $599/Month (B2B) but our custom/contact us prices can go $50k/Year or even more. Some reasons are custom user count, custom features/integrations, tighter SLAs with dedicated Customer Success Manager (CSM) etc. Gotta charge for all those conveniences.