That's not a very thought out response. 10k per wing? Just because you die? The fact that it would be sold for 75k in the donor shop is 1 in a million in the first place. Elytra are not going to be added to the donor shop. They're going to be like dragon eggs.
~ @marshallmafers
HAHAHA, no. Why does it feel like I'm the only one on this server that read the wiki page on this stuff?
The Elytra will be about as common as the randomly appearing chests in /warp wilds, if not easier, however it's one per Ender ship which come with a dangerous to get to Ender Dragon head.
PLEASE see this page for why every person going OMA THEY"LL BE WORTH BAJILLIONS has clearly not done more than look at what they do. Sure ults will be the main source of them as they can fly in the End as the stuff on/near End islands will be the only source of these awesome items, however Ults have one problem THEY HAVE NO USE FOR THESE. They get resold for what I think will be around say 50kish or less to anyone that wants them. The other way of getting to these end islands is the riskier way that you basically guaranteed a hired body guard so no a hole decides "hey you're trying to get to this island too, by building a 1x block wide path to the island then using an ender pearl. Enjoy this arrow NOOB!" that and so no mobs can kill you as endermen are dangerous when building these paths.
Lastly remember this the Elytra's durability goes away as you fly and they CANNOT ALLOW YOU TO FLY UPWARDS FOREVER, it's more like a three block increase after you fly down 10 blocks while moving forwards. At most they'll just allow you to safely go from a stupidly high point to a further away point from you horizontally and lower than you pretty quickly, that's about it asides from looking really fing cool and being really fun to use.