There are different types of preppy. I’d suggest on waiting and getting an idea of what style of clothing appeals to you and building up a wardrobe over time of quality pieces that will last and are worth an investment. Many stores have outlets, or good sales a few times a year. For example, if you time things right, Ralph Lauren will have sales where you can buy at 50% or even more off. You can also find some great buys at thrift or consignment stores in upscale areas.