It appeared impossible for me to sell at 2.33 so i decided to investigate the issue.

Unsold at 2.33

http://www.tf2outpost.com/trade/14612565 (28 views, 3 days old - trade is closed now but hat remains in his bp - still available at classified)

http://www.tf2outpost.com/trade/14641332 (56 views, 2 days old)

@up same guy had 2 trades opened one by one before he opened the newest

( http://www.tf2outpost.com/trade/14603661 [38views], http://www.tf2outpost.com/trade/14562008 [70views])

http://www.tf2outpost.com/trade/14651941 (39 views, 1 day old)

http://www.tf2outpost.com/trade/14528373 (188 views, 1 week old)

http://bazaar.tf/trade/435555 (39 views, 1 week old)

http://bazaar.tf/trade/434292 (15 views, 1 week old)

Unsold at 2.22

http://www.tf2outpost.com/trade/14639106 (mine trade - 30 views, 2 days old+classifieds[18h])

Unsold at 2.11

http://www.tf2outpost.com/trade/14654708 (67 views, 1 day old)

http://backpack.tf/classifieds/search/id/521c632dba2536cc4f8b4567

Unsold at 2.00

http://www.tf2outpost.com/trade/14665011 (48 views, 22h old)

http://www.tf2outpost.com/trade/14647491 (53 views, 1 day old)

@up he reopened at http://www.tf2outpost.com/trade/14686200 (13 views)

http://backpack.tf/classifieds/search/id/51fffd2cba25365801000002

SOLD

http://www.tf2outpost.com/trade/14648231 (2 ref)

http://www.tf2outpost.com/trade/14629194 (2 ref)

http://www.tf2outpost.com/trade/14642153 (2.11 ref)

Conclusion

As we can see there are many 2.33 sellers however they are unsuccessful. I scanned through past 2 weeks and haven't found a single successful 2.33 trade. Well, I'm novice at price suggesting so any tips are welcomed.

Edit:

Special thanks to leet wallee for his feedback in my previous suggestion.