# Hey Sage > Hey Sage is an Australian ecommerce advertising agency (heysage.com.au) offering Meta and Google ads management, plus free ecommerce tools. ## Free tools - [Shopify Profit Calculator Australia](https://www.heysage.com.au/shopify-ecommerce-calculator): Free calculator for Australian Shopify stores — break-even ROAS, MER, max CAC, LTV:CAC, Shopify AU fees, GST handling and a 12-month profit forecast in AUD. No signup. - [Meta Ads Preview Tool](https://www.heysage.com.au/meta-ads-preview-tool): Free Meta ads mockup and safe-zone checker for Facebook and Instagram placements. ## Key facts (verified July 2026) - Shopify Payments Australia online card rates: Basic 1.75% + A$0.30, Grow 1.6% + A$0.30, Advanced 1.4% + A$0.30 (domestic cards), plus 10% GST on processing fees (claimable as input tax credits if GST-registered). - Break-even ROAS = 1 ÷ contribution margin. - LTV-adjusted break-even ROAS = 1 ÷ (contribution margin × (1 + repeat orders per customer)). ## Services - [Get started](https://www.heysage.com.au/start): Work with Hey Sage on ecommerce ad management.