Is there anyway I can get a shop for my server? Without having to code it?
You can obtain third-party-modifications for Garry’s Mod 12 from www.garrysmod.org and the Facepunch Mods and Addons section.
In case you don’t find what you search, take a look at the LUA request section on Facepunch.
If I remember correctly, there was an addon called “Pointsshop” or “Pointshop”.