As you pay to have your A/C filter changed you don't know how long it takes, I am telling you, it takes about 3 minutes.
I save more than 50bht on the price of a filter, let alone paying for someone to do a very simple job...............
I do not have a Fortuner, but my 4x4 pickup I did what I could myself, same with her weee run around now, when you do Internet searches, as I do, you can save money, but it seems you are a hi-so bloke, who doesn't have an interest in saving a few bob, so you carry on...........
P.S. A creature did chew up your filter, creature pooh doesn't lie........????