GSC Computers Savings Voucher Spreading the cost of a computer over a number of weeks or months can enable you to get the computer you have always wanted whilst taking the sting out of handing over all the money at once. Once you purchase this voucher the amount will be credited to your online GSC Computers account within 48 working hours. **Please note this process is completed manually by our staff so it would be normal for the updated amount not to show immediately after the transaction has been completed.**