PGIENG2TO5 for purchasing 2 products with 5% discount
PGIENG3TO10 for purchasing purchasing 3 products with 10% discount
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PGIENG2TO5 for purchasing 2 products with 5% discount
PGIENG3TO10 for purchasing purchasing 3 products with 10% discount
PGIENG4TO15 for purchasing 4+ Products with 15% discount