What do you have in mind for the style and theme of the web page?
very easy to get around
colors (mostly blue)
very little photography
Homepage: maybe an area to start typing and seeing the words per minute and accuracy right on the homepage? Some kind of cool keyboard animation, features list
Starter - $0 full version with ads
Premium - $17.99 lifetime license - full version without ads, groups, contests and email support
Classroom - $200 up to 20 students lifetime license - full version with classroom features and leaderboard, email support, $10 per additional student