Good morning tin...
If you're talking price and have low light, low tech tanks, then you can't beat the local Lowe's. I have several 55 G tanks and last time I checked, you could get a package of three bulbs for around $10.00. These are 32 watt, 6500 K
, T5s. I switch out the bulbs about every 8 months.
The Java fern, Anubias, Crypts, Sinagpore moss, Pennywort, Dwarf Hygro and Onion plant really like this bulb. There are some other plants that like it too, but I can't recall their names.