Lenovo ThinkPad X230 12.5 Laptop, Intel Core I3-3130M 2.6Ghz, 4G DDR3, 240G SSD, USB 3.0, VGA, miniDP, W10P64-Multi Languages Support (EN/ES/FR), 1 year warranty Used Grade A - Walmart.com
Refurbished: [GRADE-A] Lenovo ThinkPad X230 Business Tablet Laptop - Windows 7 Professional- Core i7-3520M, 1TB SSD, 16GB RAM, 12.5" HD (1366x768) Pen-Touch IPS Display, Backlit Keyboard, Bluetooth 4.0 - Newegg.com
2021 Used Lightweight And Convenient 12.5-inch Lenovo X230 I5/i7 8g With 512g Ssd Business Gaming Notebook With Camera No Driver - Diagnostic Tools - AliExpress
Putting M.2 SSD in Thinkpad X230 (possible, but requies modification) : r/ thinkpad
Amazon.com: 1TB 1000GB 2.5" SSD Solid State Drive for Lenovo ThinkPad X60,X61,X200,X201,X201i,X220,X220i,X230,X230i Tablet : Electronics
Lenovo ThinkPad X230 Laptop- 128GB SSD, 4GB RAM, Intel i5 CPU, Windows – Buffalo Computer Parts
Upgrading my ThinkPad X230 from HDD to SSD (with benchmarks) – Ioannis Karagiorgos blog