Groupon offers the refurbished Unlocked Apple iPad Pro 9.7" 128GB WiFi + 4G GSM Tablet in Space Gray, model no. MLQ32LL/A, for $549.99 with free shipping. That's $20 under last month's mention of an open-box WiFi-only unit and the lowest total price we've seen for this model. (It's also $249 under the best price we could find for a new one.)
A 30-day MyWarranty warranty applies.