I bought a little Millennium Falcon from Amazon for $4 and boom ..... made my SW pro into a premium (that's all it needed for me)
There's a pattern to this with me as well:
I had the same thought when buying my GB Pro ... picked up a 3D Library and boom ....premium
Here comes TWD Pro .... picked up the fishtank light mod and boom ..... premium
Who's knocking at the door .... hey, its GotG Pro ... will get some 3D Groot hands whenever someone makes them and boom .... premium
My Avatar Pro *..... put a ceramic TZ ball in it and a $10 Banshi figure off ebay..... boom boom ..... premium
*Avatar was only released as a pro back in the olden days .. the LE was announced later