Bold values are considered the most common trading points. However, the multiple sales at 6.77 ref show that sales for 6.77 are possible, and due to a great frequency of sales at 6.66 ref in the last hour and lack of the sellers at such price right now, it would seem that the sell orders for 6.66 ref are taken within minutes. Thus, I'm assuming 6.66 ref as a quicksell value and not a cap on the high end.
Going with 6.55 - 6.77
EDIT: Whoops, looks like I accidentally countered Zeus
bot.tf stats:
https://i.imgur.com/GssGymo.png
Sold in the last week:
1x 6.55 ref
20x 6.66 ref (8 in the past hour)
4x 6.77 ref
Bought in the last week:
12x 6.55 ref
3x 6.44 ref
1x 6.11 ref
1x 6.00 ref
1x 5.77 ref
Bold values are considered the most common trading points. However, the multiple sales at 6.77 ref show that sales for 6.77 are possible, and due to a great frequency of sales at 6.66 ref in the last hour and lack of the sellers at such price right now, it would seem that the sell orders for 6.66 ref are taken within minutes. Thus, I'm assuming 6.66 ref as a quicksell value and not a cap on the high end.
Going with 6.55 - 6.77
EDIT: Whoops, looks like I accidentally countered Zeus