Just had a falling out with inlaws. Apparently they monitor our eBay account
, and noticed the dts are selling their Innotabs.
They were bought at some point last year. I did say at the time (before they gave them to the dts) I thought the dts would find them a bit basic. I was right, and they barely got touched. Yesterday, we were doing a bit of eBaying, and the boys wanted to sell their innotabs, and their bikes, so they could buy bigger bikes. So we listed them, went to argos and bought them bigger bikes.
The inlaws saw the innotabs on eBay and hit the roof. They seem (imho) to have a very odd view of presents. BIL gave DT2 his old Nintendo DS after dt2's broke, but when DT2 asked them if he could sell it to put towards his nintendo ds XL fund, they wouldn't let him, and insisted on it being returned. We felt really bad for him, we ended up giving him the difference between what he had saved and what he needed.
After talking last night, they said they will never buy them presents again and have promptly listed the Silverstone cap for sale, that they bought dt1 at the grand prix last weekend.
To top it all off, I know they had already sold £200 worth of scalextric that they bought the boys Xmas 2010, and the boys never saw that money neither. They bought the scalextric but said they wanted to keep it at their house (fair enough) for something to play with there. I only noticed, because the boys really wanted the track extensions that they had bought, to play with at home, for their set they have here. So I was thinking of getting some, went on amazon to see how much I could buy them for, and saw my BIL had listed the whole lot! 
I can understand them maybe feeling a bit disappointed, but AIBU to think that presents are presents, to be done with as the recipient wishes, not on a kind of loan until no longer wanted! Whatever we give the boys, if they outgrow it, or don't like it after all, if they sell it, it is THEIR money. The funny thing was that they were actually going to buy bikes originally, but didn't because they thought i was getting them!