When they “rep” for you they are acting as an agent for you, drumming up business. Typically, a rep takes a percentage of said business they helped you get. Somewhere between ten and twenty percent, I think, but don’t quote me on that. This could be good or bad. Depends on how much of what kind of work they throw your way, what they are charging and what amount they give you after they take their cut. Also it means that all your time is spent actually working creatively and not out beating the pavement looking for assignments, and it is only fair that someone else taking that burden on for you should get a “taste” of the profits for their effort.
Some of these arrangements are very lucrative for all parties, others are more like sharecropping and shopping the company store. Certainly the agent company is alwyas going to consider you both an asset and potential rival. From the other side of the desk, they have to worry that you might want to eliminate the middle man (them) and pocket the agent’s percentage by trying to steal away all the hard-earned clients.
They are first of all looking to save money over the costs of hiring a full time employee with benefits and all the other government-ordered paperwork and costs, by using you as a freelancer on retainer, where you as a contractor have to handle all that stuff for yourself. When there is no work, they don’t pay any contractors. Well, except if they have a retainer fee. That fee is highly negotiable and could be reasonable or paltry, depends on the bargaining situation.
This is why contractors have to charge more than salaried staff for the same job. Not necessarily because they are more expert, but that they have to cover all these other expenses that a salaried person never sees, whether there is work or NOT. The question is then, how much more one can charge as a contractor, before the contractual status is really no cheaper or more convenient to the companay than a full-time staffer. Contractors can always say no, especially if NOT on retainer, when they have a schedule conflict or just don’t want to do a particular gig. Salaried people usually have to bend to the boss’ whims whenever.
Before you go back to negotiations, inform yourself. Do a detailed analysis of ALL your costs versus the days in the year you want to work, and figure out from that your true minimum hourly and day rates. You can’t afford to take the job for less than that figure. Then compare the numbers they are offering, based on aconservative estimate of how many gigs a year you’ll do. Be brutally conservative at this stage, assume a bare minimum of work. It may work out that after they take a percentage off for their efforts, they can’t pay you as much as you can pay yourself working sans retainer but as a fully fledged independent.
I can’t tell you which way to jump, I don’t know your specific numbers situation. But if you check the achived COW threads on salaries and rates, you’ll dig up a huge amount of added info to help your decision process.
Good luck, remember, first man to say a number loses.