Madanm, Correct me if I am wrong. On the audio part of HC, the speaker says "It is too expensive", but translates it in HC as "Sa a two che". Should not it be in HC "Se two che"? I understand that "se" and "sa a" are fairly much interchangable. M

Yes they could be. Sa and/or Se could mean It or It is.  See this link Se at the beginning of a sentence

Sa a twò chè.
This one is too expensive.
This is too expensive

Se twò chè.
Sa twò chè. see link
Li twò chè.
It's too expensive

Haitian Creole ↔ English Reference, Look up Haitian Creole and English Words