Show your product prices without decimals in your feed
Shopify provides global settings for currency formatting. Among the possible formats are two formats that round to prices without decimals, you can see Currency formatting options for more details.
You can apply the same setting to the prices in your feed if the feed is intended for advertising. Just activate the feature and save setting & regenerate your feed with your Flexifu admin page.
Please be aware, the behavior will only be applied in the main feed. Prices in the currency feeds are not affected.