Uhhh... the point of this thread was him asking someone else to do the designs for him. Point me in the direction of said link with said designs. If these kids are willing to sell their apparel for 35$ a pop, which I agree isn't terrible for CUSTOM apparel, i.e. not an American Apparel shirt with something screened on, then they sure as fuck better get the pricing right for design work.
Let me do some 'splainin. Designers charge anywhere from $30/hr - $100+/hr depending on experience for their services. Considering the market your going for, I'd say you'd want something in the $45/hr range. Good, modern, clean work aimed at kids in our demo. Now lets look at the time it actually takes to make a logo or brand if your really serious about it.
Concept/Brainstorming: 1-2 hours
Thumbnails/Initial Sketches: 1-2 hours
*Custom Typography: 2 hours
Proofs/Corrections: 1-2 hours
Polishing/Final Product: 1-3 hours
That ends up being close to $200 on the low end and almost $450 high end, which in reality is not too shabby. Then go ahead and throw on the price we have to pay to keep our computers and software up to date and you'll begin to understand what the worth of said logo is.
Also I understand this is for a school project. If you don't want to pay for quality work, do what I said before. Get a pencil and paper and do it yourself.
P.s. Get learned, you don't do logo design in Photoshop.