Fair point about the light pollution. In my town they've been replacing the street lights with LED versions and it seems the beams are now more concentrated and lighting the street instead of everything in the proximity.

I hope a change like this may happen to your street in the future.

Have you thought about installing a blackout cellular shade instead? I bought a shade for this room I'm sitting in that's basically two shades in one: it has a shade that lets in light and one that blacks everything out. If you want daylight, you pull the one shade down, if you want darkness you put that shade fully up, and if you want access to the window you put them both up.

It was IMO pretty affordable. I think the one I bought was around $300, and I have pretty large windows.

Here's what they look like if you're interested