TechRestore Inc. has started offering 80GB and 100GB 7200 RPM hard drive upgrades for PowerBooks and iBooks. Complete with overnight pickup and two-way overnight shipping of the customeris computer, the upgrades sell for US$319 and $449, respectively. The customeris old hard drive is returned; it can be installed in a portable case for $19.99. TechRestore continues to offer 5400 RPM laptop hard drive upgrades starting at $229, with capacities up to 120GB.