I've a unfitted and NIB Shimano UN54 107mm (cost me £15 about 2 weeks ago but I've gone for an external BB & crank instead), and an RPM FSA 110mm which was fitted then removed as it was too short for another bike. They're worth £15 and £8 respectively.
There's not that much I'm after but will have a look in your sig
dont think i have 27.2 post, silver one is in use. could have alook if in need though though. tektro levers are allocated and shimano crank arm is still available if you didnt already have it> ? :?