How is pricing usually structured for proposal and quoting software — per seat, per document sent, or a flat platform fee — and which model gets expensive as we grow?

PandaDocSite cited

“For example, PandaDoc explicitly offers enterprise customers a document-based pricing option with unlimited seats.”

QwilrSite cited

“For example, Qwilr's June 2026 pricing announcement introduced Starter, Growth and Scale plans at $35, $55 and $75 per user/month respectively, with minimum team sizes on the higher tiers. qwilr.com”

Proposify

“Proposify combines subscription tiers with monthly send allowances and overage charges.”