It was a very expensive vase, compared to the things Wander usually is able to buy with the funds he has on the road. He was convinced that a cheap (or reasonably priced) gift would not be enough to satisfy Belloq.

And he looks pretty happy with it so far.

"I was thinkin', that you love all these old pieces of art, but ya always need to give 'em away, right? So this'll brighten up your place, an' it's all yours!"