I have! however it is only available in the beta/post LD version which you can get for $3 :)

I second the request for mass-upgrade. After just a few portals, gameplay becomes more tedious than fun.

And how about click-and-drag to “paint” as many of the selected purchase as you can afford? Like painting a whole line of chargers along a portal.

Although I suppose there’s little chance of coming back to this game after five years now.