I have 2 adult female cats (aged 4 and 3). I've had them since they were kittens but they've always been indoor cats. I have never let them outside, so they've never had vaccinations or been spayed.
I want to start letting them out, as it's a pain not being able to keep windows or the patio doors open in the summer.
How much (roughly) will it cost me to have them both spayed/vaccinated?