About £15 a month for healthy pet club - that gets the microchip, monthly flea and worm treatments, 2 check ups a year, annual vaccinations, 20% of dental treatment and some other bits and bobs.
Another approx £15 a month insurance. The unlimited one.
£30 ish a month wet cat food. She has one tin a day. Applaws tuna.
I get a 10kg sack of James wellbeloved and that lasts bloody ages. That's about £50
Treats - webbox lick e lux, toothies, hearties and so on. Probably another £30 a month.
One offs like cat litter tray, cat bed, scratching post, water and food bowls and so on. I bought her a big tower, covered litter tray, fleece rug, cat sofa, raised food and water bowl shelf so she doesn't have to put her head right down to the floor to eat and drink. ( It's far better for them to not have to do that). I can't remember how much all that was, maybe £150.
Cat litter is about a fiver a bag but it barely gets used because the git uses my strawberry patch instead. 🤬
Toys and Christmas. Probably £50 a year.