writing "US$13508.20" in words on invoice [number]

Zephyr AzureMember天朝◇魔都◇囧Chinese & Shanghai DialectJul 11, 2014#1Hi guys, I'd like to know the correct and professional expression of "US$13508.20" on invoice.I myself wrote it "SAY TOTAL US DOLLAR THIRTEEN THOUSAND FIVE HUNDRED AND EIGHT AND CENTS TWENTY ONLY".Is this O.K.?Since this is for business, I want it be formal and professional.Can any one help? (Native speakers with business background is most expected)Thanks. natkretepModerato con anima (English Only)SingaporeEnglish (Singapore/UK), basic ChineseJul 11, 2014#2Do you want the amount written in words as in for a cheque?Writing the currency first is probably considered old fashioned now, but is not impossible. I would write 'US dollars thirteen thousand, five hundred and eight, and cents twenty only' - dollars in the plural and a couple of commas added.Or today's style: 'Thirteen thousand, five hundred and eight US dollars, and twenty cents only'.S SmaulerSenior MemberIpswich, Suffolk, EnglandBritish EnglishJul 11, 2014#3...