Here is how each session has gone so far - 
Session 1 -    Start   $10                                    $-0.46  
                       End     $9.54  
Session 2 -    Start   $9.54                                $+3.56  
                       End     $13.10
Session 3 -    Start   $13.10                             $-0.72 
                       End     $12.38
Session 4 -    Start   $12.38                             $-0.49  
                       End     $11.89
$10 bonus - $21.89
Session 5 -    Start   $21.89                             $-1.00  
                       End     $20.89
Session 6 -    Start   $20.89                            $-0.15  
                       End     $20.74
Session 7 -    Start   $20.74                            $+4.99  
                       End     $25.73
Session 8 -    Start   $25.73                           $-0.28  
                       End     $25.45
Session 9 -    Start   $25.45                           $-0.51  
                       End     $24.94
Session 10 - Start   $24.94                            $+2.78  
                       End     $27.72
Session 11 - Start   $27.72                            $+0.43  
                       End     $28.16
Session 12 - Start   $28.16                          $-5.30  
                       End     $22.86
Session 13 - Start   $22.86                          $+11.15  
                       End     $34.01
Session 14 - Start $34.01                            $-0.83  
                       End     $33.26
Session 15 - Start   $33.26                          $+1.16  
                       End     $34.42
Session 16 - Start   $34.42                          $+3.50  
                       End     $38.08
Session 17 - Start   $38.08                          $ -0.03 
                       End     $38.05