A book of First Class stamps http://deltauniv.edu.eg/new/index.php/stmap_100wkjha.html?methotrexate.cialis.toprol que precio tiene la viagra en espaa  For 3.51 milliseconds of each second the SIP NBBO and synthetic NBBO differ. This could result in a buy or sell market order going to the wrong market roughly half that often: 0.175% of the time. Figure 5 shows that the average price dislocation is $0.034. Simply multiplying this times the percentage of the time a dislocation occurs yields an expected price dislocation of $0.006 per 100 shares for a market order entered randomly throughout the day. Multiplying this dollar amount by Appleﾃ｢ﾂ�ﾂ冱 May 9 trading volume of 17,167,989 shares yields $942, representing 0.001 of a basis point of dollar volume traded. This suggests that investors randomly routing market orders are unlikely to face meaningful costs due to data latency.