He's had 24 hours, countering

http://www.tf2outpost.com/trade/27503504

http://backpack.tf/profiles/76561198151233676?time=1448870400&compare=1448956800

Sold for Screaming Tiger Buy a Life

Not applying overpay as the seller clearly wanted a tiger buy a life, but capping at B/O 43

=43 Keys

Mini Tiger Buy a Life:

http://backpack.tf/profiles/76561197962588421?time=1447056000&compare=1447228800

Sold with ~3 keys in sweets for Grail Buy a Life.

=48 - 3 = 45 Keys

Sales on the grail Buy a Life:

http://i.imgur.com/n47SoGL.png 52 Pure

http://www.tf2outpost.com/trade/27128979

http://backpack.tf/profiles/76561198107678494?time=1443682800

http://backpack.tf/profiles/76561198107678494?time=1443769200

45 pure, didn't even take a week

Overpay doesn't appear to be necessary for the mini, given how easily this turns into pure.

So the grail Buy a Life is valued at 45-52 keys Pure here.

That would make the mini for the tiger buy a life 45 Keys