Actually, I would think $ 500 is cheap. Our property costs about $ 900 a year.
The budget is there for you to review, and you can certainly see if there are ways to save money, and then suggest those to the board. However, many boards are corporate controlled and they are experienced at maintaining a quality facilty.
The cost of annual maintenance is much lower then having to do repairs due to neglect. In our case, the property is at the ocean, and the salt water is corrosive. This requires more maintenance as anyone who lives at the beach can atest. Also, to be a "resort" requires maintenance of the grounds, replanting, etc. When any property is used year round, there is significant wear and tear. This costs money to fix or replace inside the units, and outside. Many items just wear out and need to be replaced, often frequently. Then there are the ammenities and services.
Look for the little things. Coffee in the lobby every day, activities, wireless internet, hosted events ( even meals ), daily cleaning of common areas ( or in some cases, more often ), utilities, phone service ...and so much more. It all adds up.
Each year I enjoy a two bedroom unit with living room, dining room, kitchen, a full gym, activities, pools, sauna, spa ... and beautiful sunset views, all for about $ 130 / night. That would be a full hotel suite, and I know there is no deal I can find that is that cheap.