They said they guarantee for 1 year but when it comes to a issue, they don't. Do not trust them. Two of new prepaid cards had no balance and the answer from their service team was contact the brand directly even they sold the cards. What a scam!
Here's what they responded.
'After further review, we have been able to confirm that the card was activated when initially purchased by the seller and sold on Raise. For this reason, we cannot refund as this issue is not covered under our 1 Year Money-Back Guarantee. We apologize for any inconvenience this may cause. We advise you to contact [brand] directly regarding further assistance. If you are able to provide written correspondence directly from the brand confirming an issue with this gift card we can continue to look into this issue further'