I'd like a clarification: the thing I want to do to the Awesome Purchase computer. Can I do that without consuming a Plot Point? If I can, then I will. Otherwise, I'll go with what seems to be the revised plan of allowing myself to be taken into custody, then breaking out and stealing some FBI uniforms using two Plot Points.
Oh sorry I missed your post. You still can make another attempt, but you must consume one PP to create an asset to distract the authorities (including the puzzled store clerk), since you have been taken down.