The 500k is listed as receivables. What you don't know yet is....
How much of that is collectible? Business receivables are defined on part as collectible or not collectible. Typically 5-10% or more is not collectible.
What are the overhead and debt numbers? Assume receivables turn over every 90 days or less, and each quarter bills the same, this means the company billed appr 2m per year. (4 quarters @ 500,000 per)
Last thing is the overhead. Assuming they bill 2 m per year , and they profit 10-20 percent, they had profits from 180,000 - 360,000 per year. (This factors in 10% uncollectable receivables) This would be before executive salary.
This is an expanding company, so they are either in debt to fund expansion, or they are self funding (doubtful).
Staffing industry in general is booming now because many large firms use them to avoid Obama care.
These are rough estimates only, but it's not a bad picture, but you won't know til you see their financials.
Hopefully the numbers show decent profit.
