Wait til tomorrow - there's a Cyber-Monday flash sale promotion (one day only) - then use 35FLASH (but verify it on the site tomorrow). It'll give you $35 for life not just 6 months.
FWIW, the 35FLASH promo is on the clock and expires at 11:59 PM EST on 11/27/2023
It applies to new subscribers only and doesn't allow stacking of promotional offers (other promotional offers such as referrals are applied to the full plan price).
Not available to existing customers. Existing customers can see if they qualify for the VISIBLEPLUS upgrade offer - see: https://www.visible.com/visible-plus-upgrade-promo