Knowing what your freelancing project is worth is a sign that you are an knowledgeable freelancer. Many freelancers have been doing their art for some time and can draw off of past projects to know what is fair and what price will get you a project. From time to time the two conflict with each other.
On all of the freelance employment sites like Globfreelance, not every buyer knows exactly what they want or how long it will take. This is where your understanding plays an essential part of the bidding process.
When a buyer promotes a project with very few specifics, send them a message and ask for more clarification. The mechanism to do this is provided in the site on globfreelance. They will never know your email address just like you will not know theirs. The advantage of not bidding but asking for more information is that the buyer is now aware that you are interested in the project and are knowledgeable enough to ask questions so your price or bid will be fair.
Do not make the mistake of bidding to low as many freelancers are currently doing. There was one project that was posted for 8 articles at $5 apiece. One of the bids made was that they would do the project for a total of $5. This makes the total payment for these unique articles in the realm of pricing for PLR articles. This is unrealistic; the buyer knew this and rejected the lowest bid.
When bidding on a project always remember you will have to provide quality work for the price you bid. If you are hesitant or think the price is too low and it will affect the quality of your work, do not make the bid. Your reputation as a freelance artist is at stake with each project you take on. If you produce low quality project at a rock bottom price, you will not receive much if any more project. This site has a system in place that gives all members insight to the kind of person you are and the quality of your work. Low quality work will receive the faster response that will have a negative impact on your reputation.
If you are new to freelancing and unsure what to bid, look at what was bid on in similar projects. Look at the range that has been listed. This can give you a clue to what is reasonable. Usually the minimum should be at or near $25. If you go below this, your project will be suspect along with your experience.
Many new freelancers forget they have experience. The work you did in college and the time it took you to compete a project there can be a reference for how long the project you are bidding on will take. Apply all the facts you possess to your advantage.
If you are still uncertain, send a message and ask questions about the specifics of the project. It never hurts to ask and will show you are a professional freelance artist when you do.