Does it need to be from Amazon?
They can be found cheaper elsewhere, but here is the GaN charger:
https://www.amazon.com/Lenovo-65W-GAN-Mini-ADPT/dp/B08KHCMWQ3
and here is the cheaper regular one:
https://www.amazon.com/Genuine-Lenovo-ThinkPad-Adapter-ADLX65YDC2A/dp/B07CGP4SB2?th=1