Okay well to start things off the sell option in the warp shop is used so items can not fall below a certain point of value.
Why should buy be removed?
Removing the buy option will remove the the servers set value on items which is something that will benifit this small Eco sever greatly. If there is no warp shop to buy from it will increase player to player purchases, that includes vshop and player chest shops. It may sound biased that I am the one making this thread since I own the largest active shop on the server but if you think about it everyone is to benifit from items costing more.
The curent baltopers ( most of whom buy their supplies and do not go to the wild and gain themselves) have to spend very little due to the sanctions the buy option has put on most all items. They may not actually buy the items from the warp shop because other players sell for cheaper to beat the server prices but if there was no buy option than players would have a more free market to raise prices as they wish.
I'm sure here is more that I can add but I am a much better speaker than writer. Still I hope the suggestion I wrote, no matter how sloppy, can get the point out and if not I am willing to explain further on ts.
Edit: ps the warp shop breaks Eula