Where to buy laptops and tablets cheaper?

I am trying to buy either a secondary laptop or a decent tablet that can replace my laptop for ordinary work because my main laptop is very bulky.

Problem is, even with low specs, it is very expensive to buy laptops and tablets in physical stores here. Moreover, even JP Amazon does not have the tablet/laptop I am looking for and its also much more expensive compared to US market.

Am I looking for the wrong resources? What are my options? I am looking for mid range lenovo or Samsung tablets or mid range laptops around 60k yen. Preferably tablets that can use Pen and external keyboard.