Sync cards. WM 10k limit since June (negative $1.81 from cash back) Lowes 9.5k limit since June ($150 balance from lawn mower). Just chatted Amazon for for an increase from 5k to 7.5k (negative $13.81 balance from cash back). Instant approval, I know I left some on the table, but I didn't want to ask for too much. Does anyone know what "threshold " for exposure Sync uses before the AA kick in? Personally I have an imaginary number of 50k I won't attempt to go over. Thanks