Logitech G100S Wired Gaming Mouse for Laptop PC with 2500 DPI Optical Ergonomic USB Mouse Both Hands Support Official Test #Affil… | Logitech, Souris gaming, Souris
I found these two G100S in a local market for around 1 dollar each. Definitely a good egg-shaped mouse aside from G102. : r/MouseReview
Amazon.com: Logitech G100s Optical Gaming Mouse Black (Bulk Package) : Video Games