These 16" diameter cutting boards are made to order specifically for the round sinks of airstream trailers( Signature, Fly Cloud, International Serenity) . The maple mix is the standard price and it's an additional $25.00 for the mostly walnut mix. We also offer an elipse cutout for the faucet, this optional cutout is an additional $25.00. We ship in the continental US. Please contact us at firstname.lastname@example.org to further questions about this product. These boards are made to order so can take up to 4 weeks to produce and ship.