No 2-3 more years you will have broken even on a quality led anyways. Bulb changes and overall electrical usage reduction will measure the switch worth it. Kinda like waiting to buy a PC. At some point you will just have to buy in lol.
Quality drivers are not coming down so much and honestly I see labor costs rising in the USA. Savings in the LEDs is only 1 of the factors. Aluminum (which is heavily used) is going up in price as well. Metal always goes up when the economy is growing.
Growers with only a few lights will never recover the money in the time you suggest. I have it worked out and it is more than twice the time you say for me.
And the outlay is huge if already equipped and have no need to worry about power savings. Plus money doesn’t really recover like that. Future expense is a factor but not a justification. That’s a sales pitch.
You can sell facts but emotions is what parts people with their money.
I have a pretty good handle on sales. I sold, managed teams and stores and taught sales and customer service during my 20 year career.
I wish I had fans helping me sell for free like you do during my career.