we have done a couple of these retro fits this year last sign was 24" x 15' single copy. ripped all neon out, and replaced with LED and reinstalled. the Extra I charged on doing this was $700.00 labor this was NOT including the power supplies and the LEDs. We have nothing to go by and had to "wing it" on charging for this
It is time consuming work to put pods in and secure. The chanel letters were nasty so those had to be washed out so pods would stick. we put ours down with silicone. The next job I job I will go up in price. But if its raining outside its a damn good job for working on and the results are awesome