I always answer my email... usually within a few hours. If you haven't heard back from me within 24 hours check your spam folder. My reply will likely be there. You can email me or text me at: 250 619-6386 *************** MINT CONDITION ~ Texas Instruments TI-89 Titanium Graphing Calculator 100% perfect working condition. Mint cosmetic condition. Does not come with cover. You're gonna love it! Peace.