You can normally get a +4 sword by level 3, and enchanted armor, boots, necklace etc not long after. It really takes away some of the fun of early leveling, as you're extremely overpowered for your level. And you level so fast you don't even have time to meet others.
I think zavox posted a while back saying they don't like Mudd's because it detracts from RP. I'm not sure about that... but I think it could definitely use a few tweaks. Even just a basic minimum sell price (as % of the item's value) would be great, so no selling +4 sword for under 15 or 20K.
Just my two coppers!