https://www.cnet.com/news/nintendo-switch-with-mario-kart-8-deluxe-black-friday-2018-deals-in-stock-2ds-labo-deals-19/

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For now it's a five-way tie, with GameStop getting the extra advantage if you buy in-store (see below) -- but it's already sold out online. But keep checking this post, because we'll be updating it if and when we spot a better deal. (If you already have, share it in the comments!)