Get page editable text data in repeater

Theoretically it is possible, however it is stored in [DocumentContent] column on CMS_Document table in XML form. So you may need to implement some custom method to parse XML and return the piece you need.

Here's some more sample code to help you, this shows how to get the Editable Fields from a Page's DocumentContent, how to get any widget on a page, and how to get any web part from a page template.

    int DocumentWithEdtiableWebPart = 1221;
    var PageItem = DocumentHelper.GetDocument(DocumentWithEdtiableWebPart, new TreeProvider());

    // Example parsing edtiable text values
    foreach (DictionaryEntry EditableWidgetNameKeyValue in PageItem.DocumentContent.EditableWebParts)
    {
        string key = ValidationHelper.GetString(EditableWidgetNameKeyValue.Key, ""); // myeditabletextregion;32c2488d-ae29-441c-aaae-fca979a5914e
        string WebpartID = key.Split(';')[0]; //myeditabletextregion
        string WebpartGUID = key.Split(';')[1]; //32c2488d-ae29-441c-aaae-fca979a5914e
        string value = ValidationHelper.GetString(EditableWidgetNameKeyValue.Value, ""); //Test Content {^widget|(name)DateTime|(JsUseServerTime)False|(widget_displayname)Date+%26+time^}
        // Note, could not figure out how to resolve the inline widgets, the macro context resolve macros didn't work.
    }

    // Example getting Widget values from Document
    XmlDocument pagewidgets = new XmlDocument();
    pagewidgets.LoadXml(string.IsNullOrWhiteSpace(PageItem.DocumentWebParts) ? "<page></page>" : PageItem.DocumentWebParts);
    foreach (XmlNode widgetNode in pagewidgets.SelectNodes("//webpart"))
    {
        var theWidget = new WebPartInstance(widgetNode);
        var testValue = theWidget.GetValue("visible");
    }

    // Example getting Page Template Web Parts from Page Template
    int PageTemplateWithEditableTextID = 26832;
    var PageTemplateWithEditableText = PageTemplateInfoProvider.GetPageTemplateInfo(PageTemplateWithEditableTextID);
    string TemplateWebPartsStr = PageTemplateWithEditableText.WebParts;
    XmlDocument TemplateWebParts = new XmlDocument();
    TemplateWebParts.LoadXml(string.IsNullOrWhiteSpace(PageTemplateWithEditableText.WebParts) ? "<page></page>" : PageTemplateWithEditableText.WebParts);
    foreach(XmlNode WebpartXml in TemplateWebParts.SelectNodes("//webpart"))
    {
        var theWebpart = new WebPartInstance(WebpartXml);
        var testValue = theWebpart.GetValue("visible");
    }

These use the namespaces

using CMS.PortalEngine;
using CMS.DocumentEngine;
using System.Xml;
using CMS.Helpers;
using CMS.Base;
using System.Collections;
using CMS.MacroEngine;
using CMS.Localization;