I'm a project manager in an advertising & marketing company.
The problem in lebanon that the clients don't pay for the QA costs and they want their work to be perfect.
I'm sure that when you deal with big companies, they will charge you this cost indirectly.
I have more than 10 years of experience in the business field and we have a good number of Lebanese clients and we know how to deal with this issue.
Best of Luck,