Fishindude, thanks for chiming in, that's reassuring! We have a tiny amount of seepage when it rains hard, more like damp spots than rivulets. Makes the basement humid in the summer though and we store stuff down there. We run a dehumidifier but there's only so much you can do. People in our neighborhood do finish their basements, but I think you'd have to be crazy to do it based on what I see in our basement. They must be full of mold. Mostly just don't want piles of sand and dust all around tracking up into the living space.
velocistar237, ok, $3,800 is less than I feared. I should just bite the bullet and get some quotes.