Took this from Wikipedia, it's a list of all the highest offers ever. We probably already have a list like this, but oh well.

First offer:
£24,000 - Steve 'Wrighty' Wright - December 25, 2006 (With £500,000 in play)
£21,500 - Danny Bloom - December 26, 2006 (With £500,000 in play)
£20,000 - Matt Borer - September 26, 2006
£18,000 - Howard Williams - November 3, 2006
£18,000 - Dorothy "Dee" Hayward - April 9, 2007
Second offer:
£35,000 - Matt Borer - September 26, 2006
£30,000 - Aaron Bell - March 29, 2006
£28,000 - Paul Hughes - April 20, 2007
£27,000 - David Jones - October 29, 2006
Third offer: £35,000 - Nicola Derby - January 9, 2007
£40,000 - Paul Hughes - April 20, 2007
£35,000 - Nicola Derby - January 9, 2007
£32,123 - Stella Selby - January 26, 2007
£31,000 - Brenda Currie - February 9, 2006
£31,000 - Nick Diamond - August 29, 2006
Fourth offer:
£57,000 - Brenda Currie - February 9, 2006 (Dealt)
£55,000 - Steven - March 22, 2007 (Inactive Play)
£50,000 - Stella Selby - January 9, 2007
Fifth offer:
£84,000 - Brenda Currie - February 9, 2006 (Inactive Play)
£76,000 - Jenni Brooks - January 4, 2006 (Inactive Play)
£76,000 - Paul 'Nev' Nevins - September 14, 2006 (Inactive Play)
£70,000.01 - Gareth "Gaz" Lawton - April 26, 2007 (Dealt)
Sixth offer:
£175,000 - Sara Khan - December 7, 2005 (Inactive Play)
£172,000 - Leanne Franklin - January 30, 2007 (Inactive Play)
£170,000 - Donna Rampton - December 12, 2006 (Inactive Play)
£170,000.01 - Gareth "Gaz" Lawton - April 26, 2007 (Inactive Play)
£160,000 - Lee Hartland - December 22, 2005 (Inactive Play)
£160,000 - Kelsie James - March 26, 2007 (Inactive Play)

Bumped this back up...and there's been alot of updates in this thread in the past 5 months. (Mostly inactive play)

Khanny had a second offer of £28k, and Darren had a third offer of £32k.