Welp, the last accepted suggestion was 10 months ago, and had no proof whatsoever. Many people would consider that this item shouldn't be priced, because it is a very rare collector's item, but I disagree on the grounds that there are 9 of them (as opposed to 1-2, like most collector items), and it already had a price. Please take into consideration that the suggestion before this one ( http://backpack.tf/vote/id/506e79b349d7b86471000000 ) had no proof at all, and it was still accepted.

Offers

http://www.tf2outpost.com/trade/1341542 - offer of max + bud [Adjusted for inflation: 3.6 buds]

" " " " " " " " " " " " " " " " " " " " - offer of 114 keys [Adjusted for inflation: 4.4 buds]

http://www.tf2outpost.com/trade/1373679 - offer of Beams Baker Boy [Adjusted for inflation: 5-6 buds]

http://www.tf2outpost.com/trade/1343068 - offer of 3 buds pure [Adjusted for inflation: 3.5 buds]

" " " " " " " " " " " " " " " " " " " " - offer of max + bud [Adjusted for inflation: 3.6 buds]

" " " " " " " " " " " " " " " " " " " " - offer of 4 buds pure [Adjusted for inflation: 4.8 buds]

" " " " " " " " " " " " " " " " " " " " - offer of Stormy Stash [Adjusted for inflation: 3-3.8 buds]

" " " " " " " " " " " " " " " " " " " " - offer of 2 maxes pure [Adjusted for inflation: 4.8 buds]

http://www.tf2outpost.com/trade/1343566 - offer of smoking modest [Adjusted for inflation: 3.6-4.7 buds]

Sales

http://www.tf2outpost.com/trade/6633962 - owner mentioned he paid 3-4 for it [Adjusted for inflation: 3.6-4.6 buds]

Q: Why do you have so little proof of actual sales?

When people buy items like this, they tend to purposefully make it difficult to find out how much they bought it for (by not posting their offer on Outpost, and opting instead to contact the seller directly), so that they can resell it at a higher price. This is why I was only able to find 1 person who revealed the price at which he bought it. In addition, Outpost tends to ban people for trying to sell normal-quality items, so there aren't as many people selling them there.

Q: Why don't you just wait for some of these to sell, so you'll have more proof?

This is legitimately a 'dead' item, there haven't been any sales in at least the past 6 months, and much less evidence of sales. In addition, many people who have this item want to keep it as a signature item/souvenir/etc because of its rarity. Therefore, waiting for more sales would mean waiting a year or more to reprice this item, whereas the current price lacks any proof whatsoever.

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Please keep in mind that this is not meant to be a perfect suggestion; it's meant to amend the previous suggestion, which was accepted without any proof whatsoever.