The correct spelling of the phrase "payed one way" is actually "paid one way." The word "pay" is spelled with a "-ai-" in the present tense, but in the past tense, it's spelled with a "-ai-" as well. However, when we add "-ed" to the word "pay," the "a" becomes a long "i" sound. Therefore, we spell it as "paid" with a "i" sound, transcribed in IPA as /peɪd/ to differentiate from the present tense form. It's important to use the correct spelling to avoid confusion and maintain credibility in written works.