Source
Public price-transparency feeds mandated by Israeli law (חוק מחירים). PriceFull + PromoFull XML, gunzipped, joined on ItemCode, deduplicated per chain.
Method
Effective unit price = discounted_price ÷ max(min_qty, 1). Discount % = (1 − effective ÷ regular) × 100. Filtered: regular ≥ ₪2, discount 1–95%.