I've read conflicting studies about use of Trust badges. Sometimes they're a good idea as it instills a feeling of trust in a nervous/cautious customer but other times it can have a negative effect by scaring off a user who hadn't considered security/privacy to be an issue until you mentioned it! It depends on the level of technical/online shopping experience your customers have.
As Gregory says - test it - get them to give you a month free trial and see if it impacts your conversion.
George
@methodicalweb