I assume by the term "Property Profile", you mean the info on the Trulia site? Because Property Profiles from Title companies never show HOA dues nor can they.
If you're referring to Trulia, It's not the agent's fault, it's the website you're using to search. The agent listing the home clearly stated the HOA dues in the MLS. But many times, sites like Trulia and the others don't pull all the info when they take an agent's listing and advertise it on their behalf. That's why it's always best to get with a good Realtor to help you every step of the way so you don't waste time getting misleading or outdated info.
Your BEST option, if you're serious about purchasing a home is to get with a Realtor who knows the area and can help you through the process. That's the FIRST and foremost step in purchasing a home. Check with friends and family to see if they can refer someone to you or research sites, such as this one to find a good professional Realtor such as one of the few that already answered your question.
Your SECOND step is to get pre-qualified for a loan. AFTER you find a Realtor, he or she will have you meet with the lender that he or she uses regularly. This is important.
Keller Williams Realty