Hope this helps.
I copied this right from the MNSCS site, in the series guidelines. THe late registration fees would be the day of registration fees.
Entry Fees
<TABLE cellSpacing=1 cellPadding=1 width=401 border=0><TBODY><TR bgColor=#000000><TD class=text width=118></TD><TD class=text align=middle width=118>Pre-registered</TD><TD class=text align=middle width=155>Late Registration</TD></TR><TR bgColor=#eeeeee><TD class=text>All Riders 18 and Under </TD><TD class=text align=middle>$15.00</TD><TD class=text align=middle>$20.00</TD></TR><TR><TD class=text bgColor=#cccccc>Kid's Comp </TD><TD class=text align=middle bgColor=#cccccc>$10.00</TD><TD class=text align=middle bgColor=#cccccc>$15.00</TD></TR><TR><TD class=text width=118 bgColor=#cccccc>Citizen</TD><TD class=text align=middle width=118 bgColor=#cccccc>$18.00</TD><TD class=text align=middle width=155 bgColor=#cccccc>$25.00</TD></TR><TR><TD class=text width=118 bgColor=#eeeeee>Sport</TD><TD class=text align=middle width=118 bgColor=#eeeeee>$22.00</TD><TD class=text align=middle width=155 bgColor=#eeeeee>$32.00</TD></TR><TR><TD class=text width=118 bgColor=#cccccc>Comp</TD><TD class=text align=middle width=118 bgColor=#cccccc>$23.00</TD><TD class=text align=middle width=155 bgColor=#cccccc>$33.00</TD></TR><TR><TD class=text width=118 bgColor=#eeeeee>Expert</TD><TD class=text align=middle width=118 bgColor=#eeeeee>$25.00</TD><TD class=text align=middle width=155 bgColor=#eeeeee>$35.00</TD></TR></TBODY></TABLE>