To answer the question of
What do you guys think I should do?
Have you contacted someone in HR to ask? (Making sure you ask politely and not in an accusatory manner.) Have you double-checked that you were signed up for the correct benefit plan and didn't somehow get signed up for a +Spouse or +Dependents plan?
You don't have a lot of options. If you're not happy with the benefits your employer is offering (and don't have other employer-offered options that meet your needs), you can either find a different employer that offers better benefits or look into declining their insurance and buying your own. Keep in mind that typically age doesn't impact medical benefits cost. You could be 26 or 66. Employer-offered insurance is (again, typically) flat-rate. Life insurance is a different story, of course. You need to look at the big picture. Vacation time, retirement options, stocks, salary, and any other benefits.
With regards to a price comparison, we don't have enough information to go from. The costs of benefits through a broker are effected by several factors including things like which industry your company serves, number of employees, claim history for the company as a whole (are they a risky company to insure for some reason), geographical location, etc.
Anecdotally: Your insurance is a lot more expensive than what's offered by my employer. An Individual plan with $500 deductible and $3,000 out of pocket total is ~$80/month to the employee. However, I have friends that work at other companies and they're paying closer to your numbers (and I have also paid that in the past).