Long-term investors looking to overcome the effects of inflation can find some satisfaction from quality growth stocks, especially from companies generating triple-digit growth in revenue and share-price appreciation. Shares of Inspire Medical Systems (NYSE: INSP), Axsome Therapeutics (NASDAQ: AXSM), and Abermarle (NYSE: ALB) can all be purchased for under $300. All three companies have had triple-digit percentage revenue and share-price growth over the past five years.