https://i.imgur.com/6YhGOQW.png

https://bot.tf/stats/item?def=987&q=11&ef=&craft=1&aus=0&ks=0

Sold:

2 @ 1 key, 36.55 ref | 1.65 keys --> 1.65 keys

1 @ 1 key, 41.66 ref | 1.74 keys --> 1.75 keys

1 @ 1 key, 41.44 ref | 1.74 keys --> 1.75 keys

All below buy order, therefore all unusable.

Bought:

1 @ 1 key, 46.55 ref | 1.83 keys --> 1.85 keys

1 @ 1 key, 45.33 ref | 1.81 keys --> 1.8 keys

1 @ 2 keys, 2.11 ref | 2.04 keys --> 2.05 keys

Classifieds (august 11):

https://i.imgur.com/4D0udhm.png

1 seller at 1.95 keys

2 sellers 2.03 keys

2 sellers at 2.04 keys

9 buyers at ~1.75 keys

Marketplace last days:

aug 10: 3 @ $3.68 / $1.85 = 1.99 keys --> 2 keys

aug 9: 1 @ $3.60 / $1.87 = 1.93 keys --> 1.95 keys

aug 8: 1 @ 3.68 / $1.87 = 1.97 keys --> 1.95 keys

aug 7: 1 @ 4.05 / $1.85 = 2.2 keys --> 2 keys

aug 2: 1 @ 3.72 / $1.90 = 1.96 keys --> 1.95 keys

aug 1: 1 @ 3.76 / $1.91 = 1.97 keys --> 1.95

Sales in rounded keys:

1.8 , 1.85, 4@1.95, 2@2.00, 2.05

Summary: Looking at the most sales I would suggest a 1.95-2 key range.