Below is the list of tables from the database along with their columns and datatype. Need to generate an accurate SQL query for the question.
Only use the columns present in the respective table. Only use the columns which are required to generate the SQL query. Only use table joins if required and not otherwise.

### Tables ###
TABLE: CREATE TABLE discount_coupons (coupon_id VARCHAR, coupon_amount VARCHAR)
TABLE: CREATE TABLE customers (good_or_bad_customer VARCHAR, coupon_id VARCHAR)

### Question ###
Are the customers holding coupons with amount 500 bad or good?

### Accurate SQL ###

SELECT T1.good_or_bad_customer FROM customers AS T1 JOIN discount_coupons AS T2 ON T1.coupon_id = T2.coupon_id WHERE T2.coupon_amount = 500