ScratchMonkeys do not impose any additional fees or service charges on any gift card found on ScratchMonkeys, and there should be no additional fees or charges when using a Steam Gift Card to make a purchase on the Steam Platform.
Should you encounter any additional fees when purchasing Steam Gift Cards off another website, understand that they are being imposed and charged by the third-party gift card retailers themselves. In this case, we'd recommend checking the Terms & Conditions of the third-party retailer where your gift card was purchased for further information.