I unfortunately have lost the receipt but on speaking to the store yest they said that was fine as they can tell from the stickers it came from them - great. We have looked online to see what he might like to change it for and one of the sets is now showing as retired (6864). It is still is Argos/Toys R Us etc so must have just been retired and indeed on the US Lego site is still for sale.
I was wondered if we shall still be able to exchange it. I have tried calling but unable to get through and have emailed but the auto response says it can take up to 2 weeks to get a reply - eek!
So I wondered if any of you wonderful lego experts have any idea as I can't seem to find anything re this on their website.
Many thanks in advance.

