I have a Japanese friend who is getting married here in the US and I plan to give him goshugi but in USD. The kanji guides for all the shugi bukuro are all in yen and while my friend is dear to me, I don't plan on giving him tens of thousand USD. Does anyone know if there is a kanji other than 百　I should be using? I was also planning on using 弗 instead of 円. Does that seem appropriate? I can't find anything etiquette wise about this situation googling and he is who I'd normally ask in these social situations.
Thanks for your help in advance!
by awesomepudding