Booked a couple of EC reward seats during the recent sale and upgraded to PE using a couple of VS cc EC-PE upgrades. Noticed that there were two UC reward seats on the LGW-MCO leg on the 27, we are on the 15, so enquired about upgrading. Told it would be £116 for the two of us but an extra 50k miles each because we had used a sale EC ticket. We used 22.5k miles for the initial reward seat but this does not seem to we taken into account, 50k miles being the going rate for UC one leg on this route. I I had thought of buying the extra 40k miles we needed but not sure if it is worth it. Any thoughts? 
