Green’s Dictionary of Slang

bans n.

[? SE a bunch of]

(W.I. Rasta) a whole lot, a great deal.

[WI]L. Bennett ‘Yuh Nephew Sue’ in Jam. Dialect Poems 16: Bans a big-shot money-men was deh.
[WI]L. Bennett Jamaica Labrish 221: bans o’. a lot of.