Hi Mike, I maintains a stand-alone tool hleofxquotes that can retrieve prices from various quote sources and can export a CSV file which can be imported into MD using your "Security Price Loader" extension.
Suggestion: make it possible to import/paste the CSV content from clipboard.
- from hleofxquotes tool: paste current prices as CSV into clipboard
- from your extension, paste the above CSV content
- that will cut the intermediate steps of having to save to file then re-open that file in your extension.