The Newegg Ebay store has Nintendo Switch Console on sale for $259.99 – No coupon required. Shipping is free.
Two Joy-Con options:
Nintendo Switch 32GB Console with Gray Joy-Con
Nintendo Switch 32GB Console with Neon Blue and Neon Red Joy-Con
With no tax for most states, this is a good backup option if you miss(ed) the Gamestop Mario Kart +GC bundle.