I have a simple process for doing this.
- Open a map
- Run a search in your browser
- Visit relevant results
- If interested drag hyperlink on to map from favicon or web page or use the MindManager button in IE
- Select and drag the price on to the new topic
- Keep on going until you have enough comparisons.
- You may need to sort by price as you go along or you could try making the price the parent topic to the URL and then you can Format > Sort by price.
- When you have decided which is the best buy. Click the topic and purchase.
I just did this for some M2 memory for my new mobile phone.