Suppose that paying k$ for something (e.g., a house) is possible for me (I have that amount of money), but considering other factors (e.g., I may be able to spend it in a better way), I think it is not reasonable to pay that. Assume that the price is not high, but when considering all factors, I think that spending that amount of money somewhere else may be a better decision
If I say that "It is not possible for me to pay it", the listener may think that I do not have that amount of money.
How can I say such a sentence so that the reader knows that I think paying that money is not reasonable for me? Can I use the word reasonable itself: "It is not reasonable for me to pay it"? Is there a better word?