I was curious where I was at now. This one is just from West Stats, because I have the publish inventory script bookmarked. Updated:
Total items: 523 Total sell price: $125712 Total buy price: $251424
Edit: And you added levels long after I gave that first total. I'm now level 57 and I know I've gotten more than 4 levels in the past month and a half.
I have about half of what Elmyr has, only due to the fact I sold my excess stuff off a couple times, now I just save. No surprise, I was totally against inventory limits, too. Actually I am saving it in case they ever add trading.