I've more then 10 years fashion design experience and working for manufacturer for more then 7 years as head of design. I design womenswear and girls clothing, woven and cut & sewn knit. I understand the trend and market very well.I've work with customer like forever21, H&M, Zara, Mango, Ann taylor, ted baker, BCBG, AX, paul & Joe etc. I study my customers from their style, materials and price point in order to design what they need for them. I am not sure how many styles you need to design for your collection. But here I quoted the price for designing 10 styles. $50USD for each. it can be cheaper if there are more styles to design in one time as a bigger project or if its a continuous project. lets discuss more for this if you interest to have something professional and workable for production.