Something like this is the cheapest I'd go personally

Just get the viparspectra 100w white LED light (green, no noise mode). Big enough for 1 massive plant or 2 medium plants, think I got it for $75 new.

https://www.amazon.com/dp/B083JVXHF6/ref=syn_sd_onsite_mobileweb_188?ie=UTF8&psc=1&pf_rd_p=25aed8c3-4e5c-4864-a8f5-da4669df3890&pf_rd_r=YV7YNSXMVANEYB3877YX&pd_rd_wg=W1J36&pd_rd_w=ukjiT&pd_rd_r=8f822b31-a076-4575-ba7f-a9eefea18db8

https://www.amazon.com/VIPARSPECTRA-Upgraded-Spectrum-Dimmable-Hydroponic/dp/B083JVXHF6

This 💡?