betonusa.com has odds for all baseball series all the time
<TABLE cellSpacing=0 cellPadding=2 align=center border=0><TBODY><TR class=odd vAlign=center><TD colSpan=7>Series Prices - First 3 Games Must be Played by 04-27-2005</TD></TR><TR class=odd vAlign=center><TD>04/25/05 </TD><TD align=right>140</TD><TD>White Sox</TD><TD align=right>+105</TD><TD><INPUT onclick=checkMoney(this.name) type=checkbox value=P5oth-140-White-As-042505,5 name=MONEY_016> </TD><TD align=right>OFF</TD><TD> </TD><TD align=right>OFF</TD><TD> </TD></TR><TR class=odd vAlign=center><TD>22:05 ET</TD><TD align=right> </TD><TD>As</TD><TD align=right>-125</TD><TD><INPUT onclick=checkMoney(this.name) type=checkbox value=P5oth-140-White-As-042505,6 name=MONEY_017> </TD><TD align=right>OFF</TD><TD> </TD><TD align=right>OFF</TD><TD> </TD></TR></TBODY></TABLE>