There is 32 hookers in total. But the cheapest ones are useless. If you buy them, they are cheap, oh yeah - but their income is so low that having them is pointless.
My suggestion is to cut them in half, leave only 16. Or remove 12 cheapest ones and leave only 20 most expensive ones - the rest.
The cheapest ones only spam the page. It would be much effective to browse the page without it.