This is definitely possible, but you'll need to do some coding to do it.
First step is to create a custom UI that will contain your UniGrid.
Then Actually add the UniGrid control, you'll want to use a custom query of sorts to populate the unigrid how you want it to go.
Next step is (by default) a unigrid only shows data, not editing. So you need to extend the Unigrid (see this article) , specefically using the OnExternalDataBound so you can control what is returned for the various fields.
The trick is to overwrite the OnExternalDataBound, catch the field you want to make a textbox, and return an actual Textbox control with an ID that you should be able to recognize (like "tbx_SKUPRICE")
This will give you textboxs on your Unigrid that you can fill out.
Next you want to add a Submit button or save button, and on save loop through your Unigrid control's rows, and search for your textbox controls, and perform the logic you wish to do with the values in them.
It's a bit complex, i've done it before, but this is about how you would do it.