The bike shop may wish to charge a deposit in order to secure the deal, however they should refund this back to you in the event your organisation decides to not take part in the scheme.  If you do proceed, the deposit will be refunded back to you when you collect your bike.  However, if the bike shop has had to place a special order for you, they may decide to withhold the deposit in the event the deal does not go through.  You should ensure both you and the shop are clear on this point.