I'm selling off my Frantone Bassweet, which is (to quote Bongomania) 'a super-heavy super-creamy stoner fuzz'. It's great for doom/stoner genres were you want a super massive wall of sound; the low end on this is immense, more so than any other fuzz I've played! This is the actual pedal reviewed on Bassfuzz.com and I bought it from Grygrx. Although the paint has suffered somewhat, everything inside is in tip top condition and has been given a once over by the pedal builder, who also updated the circuit to the latest specs. According to Fran, new version is a bit tamer in that they have much more control in the lower Sustain settings and a different tone contour to make it more useable. Frantone has now ceased operations so these are no longer in production!
Frantone product page Talkbass thread including audio clip Bassfuzz.com review
These are around $350 new (if you can still find one), I'm after $210 including shipping to anywhere in the world (or £120 posted for UK users).