What Wilde actually said was, "Ah, well, then, I suppose that I shall have to die beyond my means." He was quoted in a biography by R. H. Shepherd, first published in 1906, as having said this "at the mention of a huge fee for a surgical operation."
The quote as given in the question may have come from BrainyQuote. I've lost count of the number of times I've referred hereabouts to the unreliability of this source.
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