$150 off Switch 2 at Best Buy with Trade In
Best Buy has a 60th year deal for switch to it looks like you get $75 trade-in value for your switch one with an additional $75 to put towards a Switch 2, totaling $150 off. So you'd be spending minimum $340 (roughly with taxes). Seems like a pretty sweet deal!
You can also trade in a different device for no more than $130 it looks like.
Edit: from user @loopOutnotIn ... Just keep in mind Best Buy will not let you take the switch 2 to do a console migration before trade in
Check with your local Best Buy if they allow migration or not!!!
EditL for those who are having trouble finding it on their website: https://www.bestbuy.com/site/promo/nintendo-switch-2-offer