The Quartermasters feature went live on July 9. Almost a month in, here's what they've been doing with the money.
They've bought 47,104 items out of your shops and paid 2,132,542,946 sP for them, spread across 4,662 different sellers. That last number is the one that surprised me, I expected a few hundred people with big organized shops to get most of it, and instead it went much further!
On a normal day they buy about 1,900 items and spend about 86 million sP. Their biggest day for money was July 19 at 91,728,182 sP, and their busiest for volume was July 17 at 2,327 items. The average sale was 45,273 sP.
They've bought 1,870 different items at least once. There are only 2,071 items between rarity 90 and 99, so they've worked through about 90% of the list. The one they've spent the most money on overall is [[Lime Pot Pie]]: 104 copies for 4,838,915 sP.
Rarity 99 is where the most sP goes (duh). 9,518 items at r99 for 508,115,815 sP, which is close to a quarter of everything they've spent. 767 individual sales came in over 100,000 sP, and the ceiling gets hit regularly. If you see a sale for exactly 150,000, that's someone pricing an r99 right at the cap.
There are eleven quartermasters now and they're evenly matched by the random number generator. Cinthia is in front with 4,496 purchases and the Librarian is in last with 4,166. It's entirely random, and they're just buying all of the items.
Through July, the average price they paid went up every week. It started around 38,000 sP a day and was around 63,000 by the 31st, while the total daily spend stayed flat at 86 to 90 million. Fewer items, more money each. That is what it looks like when a price floor is doing its job (very very slowly).
There are still 78,690 rare items sitting in user shops, and about three quarters of them are priced where a quartermaster could buy them. The Quartermasters page has the caps and how long a listing has to sit before it counts.
