Hello Rollitup community.
Gender? - My pics are attached.
Potency87 - What I'm currently doing is buying from one of these local road-side rastas - the ones with their tables out with merchandise, selling their arts and crafts to US tourists. I can't reveal the location though, just look for those guys, their target market is tourism - drive along the scenic coastal drives popular with tourists. 150 gets me a decent bag of 'skunk' (with seeds). Although I also struggle with quality, these guys will push you down for quality, you've got to push back, respectfully, be humble, don't ever trust them unnecessarily.
You could just also go out for a night at long street, usually, as you walk out of the entrance of one of those dance clubs, by about 11pm and later, you'll have your Nigerians waiting to catch your attention outside with a scream, "Cocain! Ecstacy! Meth!". They should be able to help you, use them at your own risk. Beware of laced ganja, keep an eye out for suspicious powders at bottom of packet etc.
Oh, and you can simply approach any of these guys being polite and asking if they might know someone who sells quality ganja. Try to approach a rasta, it can be a safeguard since you know you're already speaking to an occasional stoner.