Train tickets are a right mare today, it may just be Avanti's website messing around or there are just very few left, I ve tried to buy but it keeps failing. Unless you have a rail card the coach will be cheaper as there are no advance tickets to be found. Best I can find is £120 for an adult +...
Sorry I was unclear, when I got in on my phone I selected two tickets and then a couple of minutes later I logged in on the lap top - the laptop session didn't start until I got to position 500 odd so not the same time
It lets you have two sessions on one log in as I picked the tickets on my phone first but before I purchased them I scanned on the laptop to see if there were any better ones first before I purchased on my phone.