You will make a saving as they are not putting on their mark up. You only get the screen receipt, however if you drop them an e-mail they will confirm your booking plus you will be able to tell from your bank as the money will have been deducted. We have received our tickets, ACM are an exception, most circuits send out the tickets circa 3 weeks before the race, ACM send them out extremely early. Only strange thing we find is that it says recorded/registered delivery, but we always just get the tickets through the normal mail. Always a little concerning as it is very obvious they are Monaco tickets due to the branding etc on the envelope! We are K1 on Saturday and K2 on Sunday. We were not quick enough for race day on the K1 high seats.