Lenovo Yoga 730-15IKB (81CU) original Precision Pen 2 - sparepartworld.com
For Lenovo Active Pen 2 GX80N07825 Yoga 930/920/730/520 Mix 720/510 ThinkPad SUS | eBay
Stylus Pen For Lenovo Active Pen 2 YOGA 930/920/730/520 Mix 720/510 ThinkPad GB 663250745604 | eBay
Lenovo Yoga 730-13IKB Processor Core i7-8550U, Memory 16GB DDR4, Storage 512GB SSD, Display 13.3" FHD, Integrated Intel UHD Graphics 620, Windows 10 Home | Help Tech Co. Ltd
Amazon.com: Active Capacity Pens for Touchscreen Laptop Lenovo Flex 5, Yoga 9i/7i, 730 720 C940 C740, ThinkPad X1 Tablet Gen 2, Miix 720-12IKB, 710-12IKB, 510-12ISK (Check The Compatible List Before Purchase) :
Amazon.com: Active Stylus Touch Screen Drawing Writing Pen for Lenovo Yoga 730 720 Mix Miix 720 510 Flex 6 5 2 in 1 Laptop Replacement ( NOT for Window Ink ) : Cell Phones & Accessories
Amazon.com: BoxWave Stylus Pen Compatible with Lenovo Yoga 730 (15 in) (Stylus Pen by BoxWave) - AccuPoint Active Stylus, Electronic Stylus with Ultra Fine Tip for Lenovo Yoga 730 (15 in) -
UPDATE 2) Lenovo Yoga 730 - Pen Experience! & Yoga 700 vs 900 Series - YouTube