1. Buy and Sell shop. Everything (Or almost everything) you can buy, you can sell. The prices are balanced.
2. Small size. Not a fan of big servers.
3. Faction with PvP, raiding, and griefing.
4. Active admins *Not as important*
5. Land claim that works with /claim, not a shovel/other instrument.
Their is minecraft realms it helps u easily have a server but you should pay
I don't really like advertising but since you asked for it.
IP: pvpcorporation.com
This server has everything you've listed. I've had fun in this server with few of my friends, but we were ganged by many factions and we were destroyed.
You can /warp shop to buy/sell stuffs
Faction with /claim
Pretty small