The 1% figure that RickB mentioned is pretty common and typically ranges from 1% to 1.5%. I have however encountered an independent adviser that wanted 10% with no guarantees of performance. Be sure you check out the adviser and get references if you go that route. Just keep in mind that there is no one more interested in your investments than you. If the adviser gives you bad advise, you'll lose out and he'll go on to another client. The adviser wins in all situations. I finally realized this after 4 advisers made poor investment choices on my behalf so I put in the effort to learn and do my own investing. There are many people that are better at it than I am, but I've done much better than 4 investment advisers (one was a fee only adviser).
In one of the financial courses I took, it was explained to me how to get clients to invest with you. That is to get a list of 100 names, select a stock and send a note to 50 that says the stock will go up, the other 50 the stock will go down. Which ever list is correct, keep that and throw the other away. Divide the list of 50 into 2 lists and repeat. You now have a history of being right twice in a row with 25 people, when you call them, they're likely to listen.