I can confirm it is crashing tons.
There's a lot of items NC prices at 99k that are UB's. Just means they werent updated.
Personally, I'm not worried about it. It's only like 200k or so difference. And your moneytreegrabber got it anyways XD. Just giving a heads up. The database is wrong on quite a few UB's.
It is a HTS item. Even if you held onto it for a month, advertising on the TP boards daily, I doubt you would make more than 250k on it, and that is if you are wicked lucky. The codex price of 99k is because lots of codexians (from where the price comes) felt it was too hts to get close to that on it. Codex database is impressively up to date (on buyables anyway, UBs are a little bit off as it has to be input manually, like JN database)