Every pet on getyourpet.com is “free” in the sense that our agreement with Guardians like yourself is that they will not charge any fee for rehoming their pet on our site, in return for our enabling them to publish their pet at no charge to themselves.
However, every Adopter agrees to pay an adoption fee to getyourpet.com for any pet they adopt on our site. This is the only way we can survive to help Guardians like yourself keep their pets out of shelters.
This means that the pet is not actually “free”. To say so could confuse Adopters because there are some Guardians so committed to getting their pets rehomed that they offer to pay the adoption fee themselves. If you want to offer this, say so, by all means. But don’t call the pet “free.”