When sourcing cotton fabric, the price is heavily dictated by technical specs. You must verify the Yarn Count (e.g., 30s, 40s, 60s)—higher numbers indicate finer, smoother fabric. Additionally, check the Thread Count (GSM - Grams per Square Meter) to ensure the weight matches your application (e.g., 110-150 GSM for shirts, 180+ GSM for hoodies). Always request a Composition Analysis to ensure it is 100% Pure Cotton or the specific blend ratio you require, as synthetic fillers significantly lower the price but affect breathability.