I notice that larger amounts spent on gifts also bothers my DH somewhat. It has been a bit of an issue for him now that we are about to become parents. Lately, an aunt Of mine has given me quite a comsiderable sum (bit over 100 dollars) to buy something for the baby. The reason she gave a momatary gift is because she didn't know what we still needed. This aunt is one of my favorite aunts, and I stayed over at her home for 1-2 weeks every summer as a kid.
My DH thought that the amount was too much, and asked me to hint at that the next time a gift of that size would come along. I don't plan to do so. The gift was given out of true generosity, and I did make sure to thank them well for it. I think hinting that it is too much would just be hurtful.
I do understand where he comes from, though I don't agree with it. We are able to afford anything we need, so he feels like we don't need all that 'help'. And he knows that my family has more to spend (also proven by the fact that my mother has given us considerable sums in the past as gifts), and he is afraid that they will outspend his parents when it comes to grandchild-gifts. Well, that might actually be likely, also due to the fact that it's my parents first grandchild and my pil's fourth. But I don't see it as an issue, and I trust my parents not to overstep boundaries.