I am currently studying and learning about fundraising and grant writing. Because I am still learning, I'm trying to keep my rates low. It is difficult to give an estimate because some grants can take a few days while others can take a month, and since foundation proposals are often basically the same, there may be a heavy discount by volume - I often charge the same for five as I do for one since it's little extra work. Drop me a line and we can discuss what works for you.