They have very nice and interesting products to give as gifts to friends or to keep for yourself as a nice souvenir. The array of products does not seem tacky and the products seem to be good quality for the price.
Improvements or suggestions
I would have loved to see a coupon for free (international) shipping with my purchase ticket to the museum. This way I could have been even more motivated to buy gifts for friends and family once I arrived home or even from the actual Museum shop and then just have everything shipped home. I like to travel light (only a carry-on for a 16-day trip) and I could not fit many things in my bag.