Exactly this, you get access to a dedicated target audience at a really competitive price point. I think a lot of small podcasts/newsletters will happily accept 100 euros for a small slice in their media. Add some artificial urgency, such as "sign up now with code X you get a Y% discount". FOMO is powerful.
Depending on the nature of the product it might be worth getting somebody to do an (honest) paid review of it. It both gives you an impression of how somebody is interacting with your product and gives you exposure to their audience.
Either this or rethink your packaging entirely. If it's pay to play, consider having a free tier. Make sure you are only charging your proper rates to those fully invested in your product.
Depending on the nature of the product it might be worth getting somebody to do an (honest) paid review of it. It both gives you an impression of how somebody is interacting with your product and gives you exposure to their audience.
Either this or rethink your packaging entirely. If it's pay to play, consider having a free tier. Make sure you are only charging your proper rates to those fully invested in your product.