Perhaps the customer does want to spend $X to receive Z, this is fine. Probably they should consider buying something off-the-shelf. Alternately, a different t

Perhaps the customer does want to spend $X to receive Z, this is fine. Probably they should consider buying something off-the-shelf. Alternately, a different thing the customer might want is to Solve Their Problem; which is a fundamentally different thing, and requires a fundamentally different process.