Ok, people want Chest Shops, but there could be too much spam. However there could be just as much spam with vanilla shops, but there isn't. This is most likely due to the fact that it takes time and a lot of supplies to make a vanilla shop, therefore they aren't as common.
I now have two possible solutions:
1) Make one of the items in the server market have an equal buy and sell price. I would personally recommend Iron. Iron in the market can be sold to the market for $25 per ingot. If Iron ingots in the market were set to where you could buy ingots from the market for $25 AND sell them for $25 (in other words if I bought an iron ingot from the market, and then sold it back immediately after, I wouldn't gain nor lose any money). How does this solve the chest shop problem? Well, vanilla shops are trading items for items. The argument is you can't do credits for items. So this fix would make it where people could buy items from vanilla shops for credits, but there would be that one extra step of first buying an item such as ingots from the market before spending the ingots at the vanilla chest shop. Then the owner of the chest shop can simply sell the ingots back to the market to make the credits back. No money is created or destroyed. Just transferred.
2) Modify the chest shop plugin so the chest shop will only work if the chest holding the chest shop items is placed on a pyramid. This would be a two layered pyramid. The bottom (base) layer would need to be a 3 by 3 set of iron blocks. The second (top) layer would need to be a single block of quartz block. This would represent the high cost of iron and quartz that vanilla shops have, and the footprint of space needed by the chest shops would be larger (albeit not nearly as large as the footprint taken up by a vanilla shop.
I now have two possible solutions:
1) Make one of the items in the server market have an equal buy and sell price. I would personally recommend Iron. Iron in the market can be sold to the market for $25 per ingot. If Iron ingots in the market were set to where you could buy ingots from the market for $25 AND sell them for $25 (in other words if I bought an iron ingot from the market, and then sold it back immediately after, I wouldn't gain nor lose any money). How does this solve the chest shop problem? Well, vanilla shops are trading items for items. The argument is you can't do credits for items. So this fix would make it where people could buy items from vanilla shops for credits, but there would be that one extra step of first buying an item such as ingots from the market before spending the ingots at the vanilla chest shop. Then the owner of the chest shop can simply sell the ingots back to the market to make the credits back. No money is created or destroyed. Just transferred.
2) Modify the chest shop plugin so the chest shop will only work if the chest holding the chest shop items is placed on a pyramid. This would be a two layered pyramid. The bottom (base) layer would need to be a 3 by 3 set of iron blocks. The second (top) layer would need to be a single block of quartz block. This would represent the high cost of iron and quartz that vanilla shops have, and the footprint of space needed by the chest shops would be larger (albeit not nearly as large as the footprint taken up by a vanilla shop.

