The $480 did real work: it surfaced a material misrepresentation before you were deeper in. The assumption doing the most work in your framing is that the access road discrepancy would have surfaced anyway during due diligence. It may have, but aerial caught it at week two rather than after survey costs, title work, and more time from your capital stack. That is not nothing.
The risk you did not mention is what happens to that footage now. You own it, but if the parcel re-lists under the same or a related seller, polished aerial of land you never closed on becomes a negotiating liability or a confusing artifact if it circulates. I would keep it off any public channel for now and confirm with your attorney what, if any, obligations attach to footage produced under a deal that terminated. That is a quick question for counsel, not something to assume.
On the operational side, the more interesting question is whether you sequence aerial differently going forward. For land deals where access and drainage are the core risk variables, early aerial before deep due diligence spend has a defensible logic. You demonstrated that. The counterargument is that you are funding professional content for a seller's asset on spec, and if terminations cluster, that line item adds up. Some operators structure it as a reimbursable deal cost the seller covers at close, which shifts the exposure. Whether your deal flow and seller relationships support that is worth testing.
The footage also has residual value as a prospecting asset. If you are working Stephens County for other parcels, wide shots showing drainage contours and road frontage are useful comps for your own underwriting on adjacent land, even if you cannot use it commercially for another seller's asset.
What did your capital stack say when you walked them through the discrepancy? That conversation tells you a lot about whether this kind of early-stage aerial diligence becomes a standard line in your process or stays situational.