Hi Valerie, Families are fun aren't they! I was always lead to believe that my father's side was the well heeled and educated lot...but it turns out that mother's tree has them all beat...almost rich and famous!
Yes, I have ordered certs from the GRO on line. I use a credit card. It is very safe and I have never had an issue in the 3 years that I have been ordering certs. They cost about $14 US and take about 3 weeks to arrive. I am in the US.
If you would like more help with British research or copies of census you can email me at mrsdief (at) earthlink (dot) net. I found your message while searching for Birmingham, Warwickshire messages (my old home town!) and am always happy to help anyone with connections to Brum (as we call it) no matter how distant.