Idea Enderchest slot purchasing

Edit: didn't realize there has already been a thread made that relays almost the same information, eerily, that I have never read:
https://www.brawl.com/threads/63916/
Does not matter where the discussion continues, all that matters is that it does.

The title says it all really and I know this has been discussed in a minor fashion before.

Basically, I'll run you through what I do to store items from my cluttered inventory.

- Small echest storage only allows for a few sets of diamond, and some sets of guns or food.
- I win massive fight, my echest and inventory are full
- I hop on my alts to give them the items just because the space is filled

I think brawl can make a little extra pocket change with the custom enderchest plugin, and perhaps adding enderchest slots on a players account permanently with a 1-time payment would work.

Maybe 10 slots could be $3 USD? This seems very reasonable because this isn't already a thing so brawl would not lose any money. Dev time for this shouldn't be long so adding this feature would make them money for sure. I would rather have all my items in one or two accounts paying the little price of $3 USD than having to hop through all of my alts to do the same.

Of course there should be some sort of limit, like 5-10 purchases at the max, unless a plugin does not allow more anyway. What do you guys think?

EDIT: REGARDING EULA
Although this does seem like an advantage this doesn't effect gameplay too much, and if it did than it would have minimal effects. My enderchest simply is never empty, so I could keep the extra items on an alt to store them. I have to pay for the alt don't I? Besides we already break the Eula severely with rank purchases and this won't effect it in the slightest