I, too, wish the prices would come down. But, we have some of the lowest entry fees in the country.
And a check on DLB shows that the price is the SAME as last year. The entry fees over the last few years (enduro & reg), $375='13 & '12, $355='11, $350='10, & $375='09 (enduro & NATIONAL). So I think that the prices have remained level. Just my two cents.
Come to SOWDIV. I paid $675 for a double National last month, and only got 8 laps of practice, 1 qual, and 16 laps of racing. (only 8 of which were green flag laps.)