Well, it would have cost - at MINIMUM - our own 3rd (#91) and 4th (#127) to jump up to #82 or #83 in time to snag Bradley before Philly came around at #86.
As it turned out, we trade the #91 to Oakland in exchange for a 7th rounder (that became, tragically, Oscar Lua) and a 2008 3rd rounder (#69). That 2008 #69 pick was later traded to San Diego for their 2009 2nd rounder and the 2008 #160. That 2008 #160 was bundled with the Pats 2008 #238 to Tampa for their 2008 #153, which became Matthew Slater.
So, the (2007 #91) + (2008 #238) = Oscar Lua + Matthew Slater + 2009 San Diego 2nd Rounder (#47).
That #47 was then bundled with the Pats 2009 #124 and #199 for Oakland's #40, which became Ron Brace.
Bottom line is that original 2007 3rd-rounder (136 trade value points) plus a couple 2009 late rounders - a total draft-trade value of 196 points (roughly, #15 in the 3rd round) became Oscar Lua (career-ending back injury in 2007 Camp), Matthew Slater and Ron Brace. If Brace ultimately turns out okay, that's a decent deal, thoyugh, personally, I'd rather have had Bradley. And, now, a couple of Tylenol.
Edit:
BTW - that 2007 4th-rounder that we didn't bundle to move up for Bradley turned into DT Kareem Brown - last seen on his way out the door of the NY Jet's facility after failing in an attempt to convert to TE, IIRC