Price Bump time! Researched this one too, since I like Fetti. Last one was 7 months ago, let's see what changed!

http://www.tf2outpost.com/trade/8103009

Offered from 18/19 keys to around 24-25 keys in Unusuals. Seems to match the current range, cept for the fact that OP claims to have sold 2 for 1 bud + a few keys.

http://www.tf2outpost.com/trade/8817407

Offered from 20 keys to a bud or so, B/O of a Buds.

http://www.tf2outpost.com/trade/8923789

No offers yet, but has B/O of 1.3 buds. Will keep an eye on for future.

http://www.tf2outpost.com/trade/8853537

Offered a Craft #5, as well as 14 keys + 2 Lack of Hue paints (with the offering person counting them as 3 keys each), B/O of a Bud.

http://www.tf2outpost.com/trade/8846741

Trying to sell it + a Buds + another Unusual (Steaming Yellow Belt) for a Smoking Pot (backpack.tf lists it at 1.9-2.3 buds, which was updated 2 days ago). Value would be 1/2 a bud then, but that seems low. Including it anyways.

http://www.tf2outpost.com/trade/8839888

Selling for 19 keys. Not much more to say.

http://www.tf2outpost.com/trade/8947681

Looking for offers, none posted yet, will keep an eye on it.

http://www.tf2outpost.com/trade/8634486

B/O on the pot is 1 Bud, but is looking to upgrade his Unusual. Turning down lots of low offers.

Conclusion: This has the potential to move upwards, but it's low end is fine as is. I'd say bump the high end though.

Admons, if you need anything else from me, let me know.