Ha, I swallowed the hype and ordered that Chinese wonder, Little Garden spectrometer today too. Just could not resist for $62 shipped
Spectral resolution looks rather good at such cost! Let's see next month...
Btw, have a local brand 40W circline here, mostly halo spectrum, but showing a little peak at ~611 nm typical for rare earth red. Not sure if it was just a coating machine not cleaned well enough, or was RE phosphor deliberately added to make CRI slightly better.