Ive tried carpet cleaning a couple of times, done all the training, bought really good equipment.
like anything its area dependant but where i am £60 for a room is about the limit. By the time youve got there, got all the gear out, moved furniture, vacuumed, pre sprayed, extracted, run the fans etc and got to your next job its not worth it.
If it took 2 of them less than an hour they definitely havent followed all the steps you should take.
Theres money in it but nothing beats window cleaning for repeat work and ease. its poope but it runs itself.