vicodin

A few weeks ago I ABed a stamp (worth about 700k) only to have it mysteriously disappear from my inventory. I had it up in the trading post, I cancelled the lot, let Abrosia run a little and when I logged back in manually to put it back up on the TP... it was gone. I ABed another one yesterday (note: same EXACT item) and again, it disappears. I've checked my SDB, my shop, my gallery, my sales history, my album... but nothing. As far as I'm concerned I didn't get a random event either.

Does anyone know what the issue could be here? Am I being CGed? I have 10mil+ in the bank and the only thing that ever disappears is this one stamp so I don't think I'm being hacked. Is Abrosia doing something that I'm not aware of? Is this stamp glitched...? According to Jellyneo this stamp is NOT a new stamp and there are plenty of these up on the TP. I guess it's technically possible that a random event stole BOTH stamps and I just missed it... but I don't exactly believe in coincidences. WTF is going on here.

Edit: I know this all sounds incredibly stupid. I am a 20+ year old recent college grad so I'd like to think that I'm not a complete moron... but still... I've tried looking for this thing for half an hour now and I just don't see how it could have just gone away. The only explanation would be someone logged into my account and sent it to him/herself but again... I have 10mil+ and rarer items... not sure why they would take this exact stamp twice.

Edit 2: Just for clarification, it isn't the only item in my inventory. I keep 25+ items on hand at one time.

I recently bought Advanced to give Abrosia a try.

I wasn't expecting to make tens of milions of NP a day... but at least a couple of hundred thousand? Scot's ABing guide shows him making approx. 1 mil a day using his safe settings (although I understand he made the guide back in 2011). But I've also PMed a few of the members on this site who claim that they make tens to hundreds of millions of NP a year using Advanced membership Abrosia so... I don't know what the problem is.

I'm using relatively safe settings (5-11 refresh rate, .9-1.3 OCR + Pre-haggle rate). I've been ABing in Toy, Book, Plushie, Mystical Surroundings and a smidgen in Stamp just to get a feel for it. I've been taking breaks in between ~2 hour ABing session three times a day (so ~5-6 hours in total). I have the profit threshold to be 5000np so I was expecting to be picking up dozens of items a day but it turns out that I only pick up ~10. I have had the Advanced for 3 days and I've barely made 300k in profits. I don't mean to sound like I'm complaining... 300k is a lot of NP for doing absolutely nothing but still... were my expectations unrealistic? I just want to make sure that I'm not missing anything.

I've been playing around with settings but it's not like I even miss a ton of things. If anything the problem I find is that the program seems to buy items that AREN'T profitable. I.e. I bought a scarab in the Coin shop for 8787 only to discover that people are selling it in the shops for less than 2k... Is this bugged? Am I looking at the wrong shops?