There's only one thing to say: get this: https://www.theory11.com/marketplace/bla......ed-split and you don't have trouble in preparing cards anymore.
I would purchase both parts (vol.1 & 2). It's worth it

Not an effect id say you'd be doing all the time.Its cool but you carnt put the cards in box so more pocket space.Deffo do it now and then

You can put the cards in the box, not a full deck but you can get about 3/4 in, enough to do the trick.

Hi mark, I received this as a present this weekend, I am one of your customer too. I'd happily buy a whole split deck. Not sure where the wife got it from though, and she won't show me the receipt, so I guess no extras for me . But seriously, I'd by that split deck as I have made a few up and it's a killer routine, but I may get 2 out of 5 good splits.

I would also buy a deck of split cards?

Looks great, an awesome vanish of the coin as well.

I'm using Phoenix Double deckers now its much easier and quicker than splitting cards.

I'd suggest to buy a card splitting tutorial (like the one I've posted above)
Why shall I buy double deckers all the time when I can produce my own gimmicks with regular cards all the time?

Card splitting is very easy once you know how it's done. I can build a Shy gimmick within 5 minutes (incl. gluing)

Cheers
Nikki