How much does inkfrog open cost? Update 6.23.20: We signed up for InkFrog at $99/yr. InkFrog clearly stated that InkFrog Classic users may use InkFrog Open at the original billing rate. Lies! InkFrog will indeed let you use the bare-bones InkFrog Open at the original price.What can inkfrog do for you? Take control of your eBay & Amazon business! inkFrog gives you the freedom to manage your eBay and Amazon business like a pro. Sync your multi-platform business with our exclusive tools.Will inkfrog ever let me use the bare bones inkfrog open? InkFrog will indeed let you use the bare-bones InkFrog Open at the original price. However, won't allow me to purchase any of the necessary add-ons unless they bill me at the new monthly price. Now I'm paying $29/month, plus another $10/month for templates; that's a 473% price increase!