seller_name,timeline_behavior,reliability_note,default_etd_days
Seller A,overcommits,Quotes aggressively and often slips past the quoted ETA,2
Seller B,strict,Reliable and usually matches the committed ETA,3
Seller C,undercommits,Quotes conservatively and often arrives by or before ETA,5
Seller D,variable,Usually competitive on impulse categories but can slip due to staffing variability,3