LEGO Classic Blue Square 32×32 Baseplate (11025) $5 + Free Shipping w/ Prime or on orders $35+

Amazon.com [amazon.com] has LEGO Classic Blue Square 32×32 Baseplate (11025) for $4.99. Shipping is free w/ Prime or on $25+ or $35+ orders (minimum requirement varies by location).

Walmart.com [walmart.com] also has LEGO Classic Blue Square 32×32 Baseplate (11025) for $4.99. Shipping is free w/ Walmart+ (free trial available [walmart.com]) or on orders $35+.