end of the auction must be in thThis auction is suited to multiple items. With 1 item only - use different code. Or remove this 'require' - you've been warnedThe number of guaranteed items should be less or equal than total items. If equal = fixed price sell, kind of OK with meGuranteed price must be greated cannot bid after the auction endalready a guranteed contributor, cannot more than oncecannot ask for a position of a guy who is not on the listauction already finalized, can withdraw only onceyour contribution and _startSearch does not make sense, it will search in a wrong directionthe guy with this address does not exist, makes no sense to witdonly the non-winning bids can becannot bid after the auction endNot much sense sending less than the price, likely an errorDue to blockGas limit we limit number of people in the auction to 4000 - round arbitrary number - check test gasLimit folder for more infoEthereum coding workshop