Nintendo frequently runs "Party Game" sales where 1-2-Switch is significantly discounted.

Nintendo has a robust system for detecting modified hardware and pirated software. If you connect a modified Switch to the internet, you risk a permanent ban from the Nintendo Switch Online service and the eShop.

Downloading copyrighted software for free is illegal in most jurisdictions and undermines the hard work of game developers. How to Get 1-2-Switch Legally and Cheaply