Custom printed bricks?

I recently purchased the Ninjago City set 70620 and with 55 stickers in this set, I would love to swap them out with printed bricks. I found a shop in the EU that has a printed bricks pack for this set and while they look really nice, the shipping cost is outrageous. Does anyone have any recommendations on where I could purchase custom printed bricks in the US? Even better, specifically for set 70620? With what I paid for this set, it probably sounds stupid to worry about shipping costs, but...