Unless the party planning supply store sends you items that are defective or have a misprint, it's unlikely that you'll get a refund on customized products. If you change your mind about what you've ordered or realize you made a mistake, you'll probably have to eat the cost if it was personalized in any way. If you buy pre-designed products, you'll have a better chance of qualifying for a refund if it's within the company's designated timeframe. Be sure to read up on the return policy of a company before buying anything from them.