Corona is available by subscription for $50.00 per year. A subscription entitles you to all upgrades, feature enhancements, and bug fixes during your subscription period. Included in your subscription are all of the screens described on this site: QuickQuote, Watchlist, Monitor, Portfolio, TimeSales, CommDesk, Waterfall, PriceCharts, codeEngine, OptionChain, and Nasdaq Level2 display. Corona also requires a tick feed available from RealTime Quotes. In addition, exchange fees are required for the receipt of real-time market data. These fees vary by exchange, and are available a la carte