Counter-suggestion.

Automated sellers at 1.66.

http://www.tf2outpost.com/trade/27796226

http://www.tf2outpost.com/trade/22517181

Seller at 1.66.

http://www.tf2outpost.com/trade/27994337 3 days.

Seller at 1.88.

http://www.tf2outpost.com/trade/28000723 2 in stock.

Sellers at 2.

http://www.tf2outpost.com/trade/28006894 VERY young.

http://www.tf2outpost.com/trade/28003594 1 day.

Unsold at 1.88.

http://www.tf2outpost.com/trade/27998243 2 days.

Unsolds at 2.

http://www.tf2outpost.com/trade/27999312 2 days.

http://www.tf2outpost.com/trade/27997456 2 days.

http://www.tf2outpost.com/trade/27997781 2 days.

http://www.tf2outpost.com/trade/27998814 2 days.

http://www.tf2outpost.com/trade/27994353 3 days.

http://www.tf2outpost.com/trade/27990163 1 of 3 sold. 4 days.

http://www.tf2outpost.com/trade/27987546 5 days.

http://www.tf2outpost.com/trade/27982132 6 days.

http://www.tf2outpost.com/trade/27984088 6 days.

http://www.tf2outpost.com/trade/27980669 2 in stock, 1 week.

http://www.tf2outpost.com/trade/27979628 1 week.

http://www.tf2outpost.com/trade/27980728 1 week.

http://www.tf2outpost.com/trade/27950051 2 weeks.

http://www.tf2outpost.com/trade/27954654 2 weeks.

http://www.tf2outpost.com/trade/27948073 2 weeks.

http://www.tf2outpost.com/trade/27943070 2 weeks.

Classifieds.

http://m.imgur.com/HBiDotl?r -Credits to DraNick.

Only valid 1.88 seller here is a single unbumped trade bot you have to add, and from my experience it's really confusing to use.

There's only one 1.88 seller that's valid and not an unsold; I see no reason to keep 1.88 in the range.

Any other proof has been omitted because of 2+ days unbumped.

Any counterproof to dismiss this suggestion is welcome.

Cheers. :3