Friends, you're all the greatest.
Just to keep you in the loop, I've received seven donations so far, averaging $20 each. One thing I should mention is that there is a small fee deducted by PayPal, so you could add one or two dollars to offset this if you'd like.
I don't know what the total cost would be, but I'm guessing maybe in the area of $500, depending on how expensive an ad would be. Will let you know when I hear from my friend.