Schumacher (D) leased a store to Martin (P). The lease provided that P was entitled to renew the lease for an additional five-year term at a rental rate to be agreed upon. P gave notice to D to exercise the renewal provision. D quoted a price of $900 a month. P hired an appraiser who indicated that a fair market value for the store was $545.41 a month. P sued for specific performance. D sued for eviction and won; the lease provision was an agreement to agree and was not enforceable. The appellate court reversed and held that P should be allowed to prove whether a binding agreement was intended by the parties. The appellate ruling overturned established precedent. The question was certified to the court of appeals.