There are other online brokerages, both large and small, that can help you sort out the individual market health insurance options available in your area. Most of them can show you plans that are available in the exchange as well as options that are only available outside the exchange (no subsidies are available outside the exchange, but as noted above, you're probably not eligible for subsidies anyway, if you have access to an employer-sponsored plan).
A good place to start is HealthCare.gov. This is the health insurance exchange created by the The Patient Protection and Affordable Care Act, and is a one-stop shop for private individual market health insurance plans (note that the exchange itself is run by the government, but the health plans for sale in the exchange are all private, from the health insurance companies with which you're already familiar). People in 39 states use HealthCare.gov to enroll in individual market plans. The other 11 states and the District of Columbia have state-run exchanges, and you'll be directed to their sites from HealthCare.gov when you select your state.
However, they might still be able to find a less expensive plan in the individual/family market, even paying full price for the premiums. It would almost certainly have a higher deductible and out-of-pocket exposure than the plan Doug's employer offers, but that might be a trade-off that the family considers worthwhile. Doug might find that his employer-sponsored coverage for just himself is very affordable, since employers often pay more towards the employee's premiums than they pay towards additional family members' premiums. So Doug's family might opt to keep Doug on the employer-sponsored plan and get an individual market plan for his wife and kids.