Thanks, it looks like creating the price list again actually did update prices for the entire list, and added the new items. I just have to go back and enter the prices that are actually different from the base price manually. There are only 50 or so items that are actaully different prices than our base price, the other 2,000 or so items have are the same price. In the future I'll look into exporting & maintaining the list that way if necessary, but for now this seems to work.
Thank you