Definitely a terrible idea to ban shed antler sales.
I never sell any of my sheds either, and I do feel your pain. However, I strongly oppose more laws limiting our freedom and initiative. As kids my brother and I spent all summer/weekends scouring the woods for a little income. We sold huckleberries, Oregon Grapes, Mushrooms, and made walking sticks, crafts from birch bark etc... I now run a little retail store, and we sell huckleberries for local pickers as well as huckleberry jams, and all kinds of other local crafts. Some of my buddies sell their sheds. That isn't why they hunt for them, but their wives aren't as tolerant of their antler piles as mine is. We just love to get out in the woods, and hike around. ( we don't use ATV's) Being able to sell what they find is the excuse they need for spending their saturday's hiking instead of raking the yard.
Really the bottom line is that we have way too many laws already. We were poor growing up, and knocked about in the mountains all the time partly because we couldn't afford any other type of recreation. The amounts of permits, tags, use fees, etc... one has to acquire nowadays is disgusting! Not to mention simply buying gas for your rig makes a long saturday in the mountains far from free. There are also plenty of laws already restricting where ATV's can go. If people were actually following the laws we already have it wouldn't be an issue. Like I said I do not use an ATV, but burn a ton of boot leather. However, when i am old and feeble I don't want to be kept out of the backcountry I love so much because we all greedily only thought about our younger selves, and over-reacted to a problem that only exists because people aren't obeying laws already in place.
If some family wants to sell some antlers, mushrooms, huckleberries, etc... to help pay for some family time in the mountains I am all for it. Is that really what you want to outlaw?