alt Hacker NewsMost state bar associations have a free consultation line that will refer you to a reputable lawyer to start with and do basic consultation on where your issue should go and how much it will be. If I had to guess, getting advice is probably $100 and having a lawyer send a letter is $250-500.
IP lawyers tend to be at the more expensive end, typical billing rate in US of $500/hr last I looked. But yes, being able to do a letter quickly is probable.