The Ti-89 Titanium calculator is currently priced around $132 with shipping on platforms like eBay and Amazon. For cheaper options, users are advised to search online for various retailers, considering both new and used models. While the manufacturer's suggested retail price (MSRP) is higher than the current online prices, budget constraints may limit choices to either lower-end models, used calculators, or waiting to save for the desired model. Concerns about the quality of used calculators have been raised, with reports of malfunctioning buttons. The TI-Nspire is mentioned as a potentially cheaper alternative with more features, prompting discussions about whether it is a better option compared to the Ti-89 Titanium.