Special cheque clearance

A cheque was deposited into my account with special clearance. I've been told it takes 7-10 business days for this, where a normal deposit takes 14 calendar days however the fee is 3 times the normal deposit fee. By my calculation that means the cheque will clear on 1 March, either way, as it was deposited on the morning if 16 February. What's so special: paying R90 for special clearance service Vs R30 for normal, when the outcome is the same. The drawer of the cheque is a liquidation company meaning the funds are in lieu of employee monies not paid by an employer and the cheque isn't crossed, so in my opinion should clear immediately. But no one can assist that I've called.