CREATE TABLE table_30172 ("Round" TEXT, "Main date" TEXT, "Number of fixtures" FLOAT, "Clubs" TEXT, "New entries this round" TEXT, "Prize money" TEXT, "Player of the Round" TEXT)

What is the round when the prize money is 7,500?
SELECT "Round" FROM table_30172 WHERE "Prize money" = '£7,500'
SELECT "Round" FROM "table_30172" WHERE "Prize money" = '£7,500'