Magic Tricks

They only give you the option of more 7's and 4's (but in various suits). I don't feel this is enough to waylay a spectator's suspicion about the cards. Too much similarity just always using 7's and 4's. Please provide more two-card options in the packets. For example, in a 3 packet refill, provide other card denominations. Clearly the effect doesn't rely on them having to be a 7 and a 4 so the 3-pack could have a 3 and a Jack, an Ace and a 9 and finally an 8 and a 2 all with various suits. I realize this is more production cost but I'd gladly pay for this variety than risk the method to a spectator.