undercutting is just a fact people. Add to that supply (high) and a general lack of patience and you get lower prices. It's also a low lvl synth in an popular craft. If you feel it's not worth the gil you'll make(which would only be if you don't fish) then don't do it...it will lower the supply and up the cost again. Prices fluctuate...they always have and they always will. With a rod and lure it costs nothing to but time to get these low level fish. Water crystals are EASY to farm.
Have to agree with Nirrvana. I hate undercutting as much as the next guy but c'mon now. Watch the item you're about to flood before you complain that people are undercutting you. If there's 100 stacks on AH use something else. Geeze
For jobs that can use Anubis' Knife, it is the equivalent of 50 poison pots, normally up for ~2-3k on my server. Perfect for Azdaja spams.
For people looking for cheap poison effect, use Elshimo Pachira Fruit (Go to Kazham...).
For most other jobs (or someone who cannot afford to have their poison effect fall [healer, tank, stunner, soloer]), use Cantarella if you're needing to have a long-term poison effect. 10hp/tic (every 3 seconds), but lasts for 10 minutes, and can easily be countered with a Regen II. Return of the Alchemists :)
"The newly introduced Elshimo Pachira Fruit will inflict a 1 damage/tick poison and last for 2 minutes. The best part is it only costs 154 gil each or 1848 gil a stack."