I just got this myself last week and thought i'd share incase anyones interested in picking GH3 up.
Guitar Hero 3 Bundle £50.98 http://www.amazon.co.uk/Guitar-Hero-III-Wireless-Controller/dp/B000X1BF2S/ref=pd_sim_vg_h_?ie=UTF8&qid=1215934473&sr=8-2
Guitar Hero Aeorsmith Bundle £59.98 http://www.amazon.co.uk/Guitar-Hero-Aerosmith-Wireless-Controller/dp/B0017KU0UC/ref=sr_1_1?ie=UTF8&s=videogames&qid=1215934952&sr=1-1
2nd Wireless Wii guitar - £25.99 (not official) http://www.amazon.co.uk/Neutac-Wireless-Guitar-Wii/dp/B0019UBFJU/ref=sr_1_12?ie=UTF8&s=videogames&qid=1215933999&sr=8-12
GHDS £29.98 http://www.amazon.co.uk/Guitar-Hero-Tour-Nintendo-DS/dp/B0017KXK0O/ref=sr_1_8?ie=UTF8&s=videogames&qid=1215934473&sr=8-8 (buy this with Jam Sessions for £36.96)
GH Aerosmith £29.98 http://www.amazon.co.uk/Guitar-Hero-Tour-Nintendo-DS/dp/B0017KXK0O/ref=sr_1_8?ie=UTF8&s=videogames&qid=1215934473&sr=8-8
some good savings there
