Condo's have condo fees. HOA's have HOA fees. These are NOT the same. However, in answer to your question. All condo fees are the same. Most sales associates fail to investigate fees to ensure they have the latest numbers. Fees can sometimes change annually to allot for the following year's budget, and if folks in the condominium have failed to pay their own fees, those who are paying fees may end up with a special assessment to cover common areas which should have been paid by others.
Any time you have a question on a condo that you may wish to pursue answers on. Ask for a "Frequently Asked Questions" sheet (it is mandatory and must be furnished by the association management company). It will spell out the condo fees and other rules which should be spelled out before a contract is negotiated. These are spelled out in law, F.S. 718 for condos, F.S. 720 for HOA's. Only work with sales associates who are familiar with these laws as they relate directly to buyers and sellers in shared ownership communities!
It's best to call or have your agent call the association directly. It's possible that there is a special assessment for a repair or replacement set in place and that could affect the amount. Call the source directly and ask. good luck.