We need to have that music playing the background ...."It's a man's world"
Here's a couple of things you can show him.
This comparison was last taken back in 2015
A big question you'll have to answer is, is the system on a 30ma or 60ma? What diameter tube, 15mm/18mm? Most likely 15mm?
At the last recorded picture it was 23K+ hours of operation, or 6.3 years if left on 10 hours a day, or 7.9 years if left on 8 hours a day.
Obviously the Neon started out 5 to 46 times brighter over the LED Neon (on a 30 ma system)
You can share these with him.
If you scan left to right you'll see some vendors/products were replaced, because they degraded so quickly, the Sloan barely has a pulse. The Sloan & GE rigid have lasted because their in a pipe, and it's low wattage low light output so we can expect those to last BUT, the trade off is for long life, low light.
If you look closely you can see the individual break down of the diodes trapped in the silicone/gel flexi.
With case history we know Neon has a gradual degradation curve in light, LED, is unpredictable and on a chart, up and down, fast hard tangents. In the first couple thousand hours Neon will take a lumen maintenance of 10 to 18% in loss then slowly drop down( Hg/Argon fill), Clear red will not ans is not affected by ambient temperatures because it's just glass and gas with no mercury to condense up in the cold.
For power, Colored Hg/Argon Neon 15mm is 3 watts per foot, 2.5 for 18mm. Rigid LED is about 2.5 watts per foot too. So there is no savings to be made UNLESS the Neon system is on a 60ma then you just double it. BUT let's just say you have a parameter of 100 liner foot.
100' x 3w =300w 300w x 8 hours x 365 days x .18 kwh /1000 power (C&C) = $157.68 annual cost of operation if left on 8 hours a day, double that if 60ma, less if the dimeter of the tube is 18mm
100' x 2.5w = 250w x 8 hrs x 365 days x .18kwh /1050 (Electronic) = $125.14 Annual cost of operation, but see all above for pro's and cons
$157.68 - $125.14 / $157.68 = 20% saving in cost of operation using LED
Neon 15mm 167 Foot Candles
GE Contour 27 Foot Candles
167 - 27 / 167 = 83% more light using Neon
ON your ROI, that is yet to be determined but you know the cost of operation savings
Cost of LED Material + Labor = Job Cost / 20% savings ($32.54) = years of ROI, in most cases it's 20 to 40 years BUT will you need to re-retrofit the LED as seen above?
Here are some Border Tube Diagrams that I dug up from the Neon Installation Guide, a great reference
Conventional = BAD
MIDPOINT = IDEAL
How many linear feet are is mama working with?? We can break it all down here if you want for shits and giggles
To me, already knowing how to work with Neon you'll bring more money home IMO on the labor, rerouting runs, better tranny placement adding better low cost components like Silicone GTO & Caps etc, and it will be MUCH brighter even with new glass than paying than the big upfront cost of just buying the LEDs itself (paying a dist)
Also, you can get 60' of Neon on one Transformer and only about 30' of LED on a single power supply depending on the type etc, maybe even more. So less Power supply placement with neon (Labor)
Things change of course with costs but looking back based on 500', just lamps, Neon came to $2,250, GE $27,340, Sloan Flexi $21,250