Table: reality_show_series
Columns: season
episodes
series_premiere
series_finale
winning_couple
winning_profit_aud
host_s
judges

Question: What season had a winning profit of $15,000?
SQL: SELECT "season" FROM reality_show_series WHERE "winning_profit_aud" = '$15,000'

Question: How many series premieres did the season "All-stars" have?
SQL: SELECT COUNT("series_premiere") FROM reality_show_series WHERE "season" = 'All-Stars'