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Gooit-E via Amazon [amazon.com] has GobiDex Lava & Cave Dinosaur Magnetic Tiles Building Set on sale for $19.79 – $9.80 off when you apply promo code DK6SONFV at checkout = $9.99. Shipping is free w/ Prime or on orders $35+.

Note: Amazon promo codes don’t always apply seamlessly. If you run into this issue, try refreshing the page, re-entering the code, or checking after you select a payment method to confirm whether it already applied.