Needing racy or sexy stock photos

I’m a web developer and recently picked up a client who runs an adult-oriented (aka swinger) nightclub. They want to have racy photos on their site to promote events and such but don’t have a budget (or models) for a private photo shoot. They’ve been using a random assortment of “sexy” pictures from various stock sites, but many of them just don’t quite fit the vibe.

Are there any stock sites or services that have racier images? They don’t need to be explicit in terms of nudity, and they don’t want outright porn. But they do need to be highly suggestive of group, same-sex, and kink-related sexual activity. Most of what they’re finding is too posed or too vanilla.

Thanks in advance!