1 ref = .2 keys

2 ref = .3 keys

3 ref = .5 keys

Sold

http://www.tf2outpost.com/trade/14594369 (2 keys painted TS sold) qs

http://www.tf2outpost.com/trade/14590920 (2 keys sold) qs

http://www.tf2outpost.com/trade/14443142 (2.2 keys sold)

Unsold

http://www.tf2outpost.com/trade/14592823 (2 keys painted muskelmannbraun, 13 hrs)

http://www.tf2outpost.com/trade/14570938 (2 keys, 1 day) originally accidentally listed as 2 ref, that's why wiling buyer, http://www.trade.tf/trade/511051456

http://www.tf2outpost.com/trade/14603977 (2.2 keys, new)

http://www.tf2outpost.com/trade/14551355 (2.3 keys, unbumped)

http://www.tf2outpost.com/trade/14597307 (2.5 keys painted TS, 6 hrs)

http://www.tf2outpost.com/trade/14078778 (2.5 keys painted gold, 3 weeks)

http://www.tf2outpost.com/trade/13724089 (2.5 keys, 3 weeks)

http://www.tf2outpost.com/trade/14148030 (2.5 keys, 2 weeks

http://www.tf2outpost.com/trade/14383479 (2.5 keys, 1 week)

http://www.tf2outpost.com/trade/14460677 (2.5 keys, 6 days)

2 keys doesn't really seem solid so it's not included in price.