Most economical curtain driver (rod style) aqura?

Most economical curtain driver (rod style) aqura? Suggestions? Thank you

I’ve purchased a ZemiSmart motor for my roller shades from AliExpress. It wasn’t too expensive and has always worked flawlessly. Took a bit of effort to setup initially as I recall, but it was well worth it.

The same that @Sebastien: I use Zemismart roller shade motors with battery, one charge lasts months! They're cheap and reliable.