Perhaps I'm really stretching it but the doubt is still there. So, my rendering of “вся наличка“ here is more general: “все, что у нас имеется в наличии“, meaning materials, documentation, etc, but not necessarily cash.

That is simply because I don't see how it is that one prepares cash for the client: usually one expects money FROM the client.... unless of course it's a kickback...

But you would know all that from the context... if any.