The average salary of an experienced welder is about $60,000 a year.
Multiply $60,000 by 60 and you have : $3.6 Million a year in wages.
Three $150,000 robots is just $450,000 !!
Of course you have to consider parts and maintenance. But when balanced against payroll taxes, medical and sick leave benefits, there really is no contest.
I am of course, assuming that the $150,000 price per robot is accurate.
Continue to put people out of work for automation and pretty soon nobody has a job to buy your crap. Hmm.... Not everyone can write software or be a doctor.