This is from a different perspective

I will put the labour costs being paid around here (this is the salary being paid (cost to company) and includes office space ,medical ,insurance ... )
5-6 years of experience paid around $3 - $5 per hour
3-5 years of experience paid around $2 - $3 per hour
0-3 years of experience paid around $1 - $3 per hour (this includes fresh CS students)
Again this is fixed salary per month and the people here usually end up working anywhere between 10-12 hours per day but they do not get anything extra (they are only paid for 8 hours)
Companies here charge the clients anywhere between $5-$50 per hour (depends on the size/name of the company) .

Now the answer to your question , If i were to work from home with my experience and kind of salary that i get here , $5/Hr is more than what i get in a job
. In short you can take the job for $15 and source it to someone for $5 and u just review the work and get the job done by just monitoring
does this sounds familiar ;-)