Search on eBay and sort by distance/nearest first. There are LA-based sellers, some may allow a local pickup even if it is not listed, send them a message. There are bluetooth (for Android) others are wifi (iPhone), make sure you pick the type you need.
As for what to look, make sure they charge the car fully and get the Gid count, there is also the AHr value which doesn't depend on the current SOC, not sure if the latter can be affected by gradual capacity loss data reset, and I think Spy's displayed SOH value is based on the AHr. Gids shouldn't be as they reflect how much energy is actually stored in the pack, a new pack I think is 281 gids on a full charge, and for example mine with 34% capacity loss was 187 this morning.
'11 SL, totaled
-1CB@33k/21mo, -2CB@53k/33mo, -3CB@68k/41mo, -4CB(41.5AHr)@79k/49mo, -5CB(38.85AHr)@87.5k/54mo
51.1AHr, SOH 80%, 150k miles