Is there no more "additional dog" discount for multiple pets?

Last time I used this service, about a year ago, I was charged one fee for one cat and an "additional dog fee" of half the normal fee for my other cat. I know the sitters set their own rates, but now I'm looking and NONE of the sitters in my area have a separate "additional dog fee".

I'm only booking a 30 minute drop in visit. My other question is, if I'm booking a whole 30 minute drop in visit for two separate pets, does that mean I'm paying for 30 minutes for each individual pet or am I paying the 30 minute visit twice and only getting one 30 minute visit total, so more like 15 minutes per pet?