Greer do tasty stuff, and just quietly, I'd buy it just for the cool graphics. This is a low gain style of fuzz, so you can use it as a hairy boost or an always-on fattener. If you crank it, it'll deliver a smooth and creamy fuzz that's great for legato leads or grunge rhythm parts. But yeah, cool graphics, right?

Model: Greer Amps Green Giant
Made: Athens GA, USA, recent model (serial 4713)
Type: fuzz, low gain 
Power: standard 9v negative supply (not included)
Equivalent new street price (approx): $220aud
Mods: velcro added
Accessories: original box and docs
Condition notes: used, no major marks, very good condition