DIY outdoor kitchen cabinets (flat-pack): $2,500–$6,500 for a straight run, excluding benchtop. Benchtops: Compact laminate $700–$1,200 per linear metre; porcelain. . Portable outdoor kitchens emerge as a well-received and cost-effective choice for those adhering to a tighter budget. They present diverse configurations and are readily available at prominent retail chains. Pricing Range: $3,000 – $17,000 Brands: Beefmaster Kitchen – $4,089: A reliable option. . So, how much does an outdoor kitchen cost? Taking all those factors into consideration, we've found that on average, outdoor Kitchens cost: Budget Outdoor Kitchen: A small alfresco or outdoor kitchen costs around $10,000 to $15,000, and it could include custom cabinetry, a cooker/BBQ/grill, and a. . DIY outdoor kitchen cabinets (flat-pack): $2,500–$6,500 for a straight run, excluding benchtop. You can literally hose your outdoor kitchen down.