We can assume that there are people who purchase content judging by the number of promos for the stuff.

Without any implied judgement, why? Really asking to understand in case I'm missing something.

Content is a single Google search away after all.

1-Content can give you a real "feel" for the service provider you plan to visit at the fraction of the cost.
2-when distance jepordises a physical visit, content can be a fun way to explore fantasies
3-taboo fetishes and kink can be explored safely and feel more real as the creator that is in the realm of physical reach

Alot of punters like to purchase before actually booking. It gives them a feeling of what I'm all about
Also it's an extra income
Sales straight into my bank accounts

It's all about differentiation. Yes tons of free porn on the net. But I believe the difference is these are from ladies you could book or have booked. For everything thing else on the net it's not possible to actually enjoy the company of the person in the video or pic

However, personally I feel the price you pay is a rip off, for many (not all) of the promos as currently advertised on this site and sent via WhatsApp or Google drive etc. You get a measly 3 to 4 videos and a few pics for R300 to R400, in many cases no face so if could be any random lady's pics and videos being resold.

The better alternative are those other content platforms I can't say names. But you pay on average about USD 5 to 10. And you get everything (many cases more then 100 pics and vids) on the advertisers page for a whole 30 days or longer.