I do offer shipping via ebay Standard envelope for purchases under $20 and USPS Ground Advantage for all card purchases. Please consider all factors before selecting ebay standard envelope.
While ebay Standard Envelope is an affordable domestic shipping option (between $.69 - $1.25) for cards and multiple cards under $20, it has come to my attention that adding any extra protection may cause the envelope to get rejected in the USPS sorting facility for being too rigid and depending on who is sorting may get flagged with insufficient postage for not being sent via Ground Advantage as it should be treated as a parcel by some strange logic in our postal service. It should also be noted that while it does have tracking, the tracking itsn't held to the same standard as it's treated like a letter you would just drop off in the mailbox and not as a package that is scanned when you hand it to a worker. This means the tracking is limited and while not common at higher risk of getting lost. That being said going forward any cards sent this way will only have the protection of being folded in a piece of printer paper to keep them from moving too much inside the envelope.
Ground Advantage offers more reliable tracking and I will take precautions to add extra protection to ensure the card or cards is delievered undamged. However I know it's 4 times and in some cases 5 times the cost and that can turn people off from a purchase when it comes to a card under $5.
I do combine shipping for an additional .10 per card and if the order exceeds $20 I will ship it Ground Advantage at no extra cost.
Please contact me if you have any other questions. I will answer as promptly as possible. Thank you.