(It's my first price suggestion, if I made mistakes in it, or you have some tips, feel free to write it below!)

So yes. Crate #19's need a little price update, last price was accepted 2 months ago, it seems that it has dropped in price a bit. Sellers can stil sell their crates for 1 key, however many seller willing to go downer, the lower price comes from here (0.9 key = ~ 5.00 ref). I know it's an ugly range, but most of the trades still happens in keys, not in metal, that's why I put that instead of 5-5.55 ref.

Selling below current price: (5.00 ref - 5.44 ref)

http://www.tf2outpost.com/trade/12476502 - 5.00 ref

http://www.tf2outpost.com/trade/12382942 - 5.00 ref

http://www.tf2outpost.com/trade/11392235 - 5.00 ref

http://www.tf2outpost.com/trade/12334456 - 5.00 ref

http://www.tf2outpost.com/trade/12441804 - 5.00 ref

http://www.tf2outpost.com/trade/12322986 - 5.22 ref

http://www.tf2outpost.com/trade/12415618 - 5.33 ref

http://www.tf2outpost.com/trade/12120277 - 5.33 ref

http://www.tf2outpost.com/trade/12309781 - 5.33 ref (but also accept key - 1 rec, = 5.22 ref)

http://www.tf2outpost.com/trade/12153020 - asking for 1 key, however down in comment section he said he's willing to do 5.33 ref

http://www.tf2outpost.com/trade/12488124 - 5.44 ref

http://www.tf2outpost.com/trade/12211639 - 5.44 ref

Classifieds: http://backpack.tf/classifieds/search/5022/6/19 - 1 for 5.33 ref; 3 for 5.44 ref

Sold at 1 key:

http://www.tf2outpost.com/trade/12322089

http://www.tf2outpost.com/trade/12446850

http://www.tf2outpost.com/trade/11410133

http://www.tf2outpost.com/trade/12205222

http://www.tf2outpost.com/trade/11187264

http://www.tf2outpost.com/trade/12173013

http://www.tf2outpost.com/trade/11609464

Feel free to write counterproof, or support this suggestion with more proof, everyone's opinion are welcome!