FairPrice extends a shopper voucher promotion that offers customers $6 vouchers until June 21, according to reports. Under the promotion, shoppers can receive up to 20 vouchers per transaction. The vouchers can be used without any minimum spend, allowing customers to apply them on eligible purchases during the promotional period. The extension continues the existing promotion for a limited time, giving shoppers more time to take advantage of the voucher offer before it ends on June 21. The reports do not specify additional conditions beyond the per-transaction voucher limit and the absence of a minimum spend requirement. Further details on eligibility and redemption terms are not included in the provided excerpts.