I'm starting again with adwords as I've seen good results in the past. Now, I've redeemed one of those coupons for 75? (I'm in Europe). They say that your advertising campaigns must accrue costs of at least $25, within 30 days to activate the coupon. Right now, I've spent 94? in ads of which only 19 have been billed, as the coupon gave me additional 75?. Can I stop right now and open a new account or do I have to reach 100? total before moving on?