Ways of shipping or sending trading cards/blind bag cards

[MaronaPossessed]

I don't want to be a bad seller or anything...but how would you ship MLP trading cards/blind bag cards?

My first though would be a simple paper envelope (you usually receive mail as) with the card being in a card sleeve.

I mean, how cheap or expensive should I go?

[kakenterprise]

I think a thick card sleeve holder would be a great idea. 
If you don't have one I'd recommend some cardboard putting the cards in between and taping it shut. 

[tulagirl]

Yes I agree cardboard should be used if you are not going to use collector sleeves.

[ShortyBoo]

I usually use cardboard, or if there are several cards, just wrapping a piece of printer paper around them and taping it shut works fine. For foils, though, I'd probably use one of those plastic card protectors. Surprisingly, though, I've actually had several cards sent to me that were just in an envelope and they made it to me just fine, though it's risky to do it that way.

[ponylady]

Yes I agree cardboard should be used if you are not going to use collector sleeves.

Agreed, I have shipped cards this way placed in a bubble mailer without incident many times.

[Ringlets]

*nods*   some stiff pieces of cardboard should be fine to protect the cards, and then put them in a bubble envelope. A normal envelope might do if the cardboard is very thick and unlikely to bend in the mail, but a bubble mailer might be safer

[Dragonflitter]

I've done a lot of trading MLP cards here and just a regular envelope works fine for me. I haven't had any trades come to me damaged, nor have any of my trade partners said their cards came to them damaged. I usually put a thin piece of cardstock in the envelope to give it a little stiffness.

However, the US postal system says if a regular envelope is too stiff to go through their reader machine, they mark it as 'non-machineable'. Basically that means they have to sort it by hand. Which they charge you more for. So if you use a regular envelope, you need more than just the 45 cent stamp. It's another 20 cents for non-machineable.