I think it is unavoidable trend in robotic industry and with our technological  advancement to think about sex robots- it is just time signature of our epoch ..
( if army robot created there by google now and you know that google bought Boston Dynamics robot makers
 check  that - https://www.youtube.com/watch?v=QVdQM47Av20  
 so it is just normal that sex robots ideas are on the table  
 Yet I would say .. that as now in now - on modern curve of for sex services and who are our men -  the business  of making sex robots for 60 000would not  earn enough revenues  
simply - those men who can afford 60 000 for a woman - rather will hire wife experience woman who is  earth down open minded and with right mind about her place near man, has her own goals and  life and does not expect after divorce break all his empire in two peaces ...
 Those men still are willing have real life lovers with real eyes real skin and real smell and recovering in biological ways instead requiring tech maintenance  and cleaning - just cleaning robot out you exposed sperm in to her - can be  turn off for many just imagine that !!! hahhaha she is greeting ready to date .. scary sleep dream .. taking robot by parts I guess cleaning her mouth?? its mechanical "vagina"
  think it be turn off for many men

So those with money do not need that  
 those with no money be not able afford price range  30 000 to 60 000  
May be wives be saving money to gave present to husband keeping him from seeing real women .. But I bet that husbands would not be happy and will come here for us.
 Myself I also do offer wife experience  - but no more then fro 2- 3 month
 It is when I am full and my love stopes.
( not yet met man which will make me love him for the rest of my life .. and then he also do not need that .. ) so please  
 review those tips from  Friedrich Nietzsche..
and may be share as well what do you think?? I think it is very earth down tips  as to robots ..-  
 Not yet time  .. may be when all women be dead.. then may be .. Hope men agree with me  
Thank you for sharing
 http://www.scielo.org.za/pdf/ipjp/v9n2/07.pdf