Economy products are good quality, basic items at a low cost. If you're on a tight budget, the economy range could work well for you. However, if your budget can stretch further, the premium economy products are 'better than basic', the stitching, fabric feel and fit have all been upgraded giving a noticeable confidence boost for the wearer.
If budget is tight, consider a white garment, opt for a single position of branding and increase product quantity to benefit from the bulk discounts.