Hi, sorry but you can't sell on here until you've been validated. Regarding the bike (which should be a Czar rather than a Czah), you'd have to give us an idea of what parts are on the bike and/or some pics of it to get an idea of its worth but as a ballpark you'd probably be looking at between £300 and £500 depending on spec.
Anyway, expect this topic to be closed in the near future.