Happy happy resuggestion time. Thanks to polar for help on the adjustments. I just added some extra proof to the mini-suggestion to spice things up. =P

http://www.tf2outpost.com/trade/19091457 - Sold for an Orbiting Planets Human Cannonball (1.7 * 0.9 = 1.53 rounded to 1.5) + Collector's Professional Killstreak Bazaar Bargain (estimated from the SCM at 5 keys, and this was back when buds were 19-20 keys, so it's calculated at .25). 1.5 + .25 = 1.75 rounded up to 1.8 buds.

http://backpack.tf/profiles/76561198057045429?time=1398582000 and http://backpack.tf/profiles/76561198057045429?time=1399186800[/url] - Sold for a Vintage Bill's Hat (price at the time of the sale was 1.4, so 1.4 * 0.9 = 1.26 rounded to 1.3 buds).

Planets Cannonball Mini-Suggestion:

http://www.tf2outpost.com/trade/20256707 - Sold for a Stormy Storm Flamboyant Flamenco (1.55 * 0.9 = 1.395 rounded to 1.4).

http://www.tf2outpost.com/trade/19936014 - Sold for 2 buds pure.

http://www.tf2outpost.com/trade/19808559 - Was willing to sell for 1.6 buds pure.

That would make the hat's range 1.4-2, and 1.5 after overpay (calculated from 1.7).

There was also a >2 months old sale where the hat sold for 1 bud + 19 keys. That's not a part of the range, but it is why I decided to round up to 1.8.