Leverage the presence of competitor offers to negotiate a better deal with Sanity. Communicate that you have evaluated similar products from other vendors that offer lower pricing while meeting your functionality needs. Use these competitive offers to create urgency for Sanity to match or beat these prices. Mention that the finance team has tied hands as we're considering alternatives based on pricing.

Request the removal of the auto-renewal clause in the contract to maintain flexibility for future negotiations. Stress that your finance/legal team mandates that all vendor contracts must not auto-renew, aiding in future negotiations and allowing a chance to reassess the relationship each year.

Inquire about the possibility of waiving any overage fees that could accrue during the contract term. Highlight your past usage patterns and set expectations for what you will pay based on historical data that aligns with your budget constraints.

If there are any additional features for security compliance, push for these to be included at no additional cost. Emphasize the trend of competitor vendors including such features in their standard offerings, and make it clear that your budget constraints won't allow for extra charges just for security enhancements.

Offer to serve as a reference or participate in a case study in exchange for better pricing or terms. Highlight that your positive experience and growth with the tool can provide significant marketing value for Sanity, and this can be reciprocated through pricing concessions.

Challenge any proposed uplift in pricing upon renewal by referencing budget constraints. Reiterate that your organization does not plan to accept automatic price increases when the previous agreement did not include such provisions.