Buy the holster they are not going to rip you off. They are one of the best most trusted makers in the business.
The other option is to call Lightening Arms or Top Gun Supply and pay a premium to them if they have what you are looking for in stock.
The CID number on the card is necessary to complete a transaction when the card is not present. My system will not let me run a card that has not been scanned.
It is for your protection and the merchants. If you are REALLY paranoid have your CC company give you a temp shopping number.