Baldur's Gate 4-in-1 Boxset (BG 1 and 2 + expansions), $16 / $15.88, Amazon

[Isurus]

http://www.amazon.com/Baldurs-Gate-4-1-Boxset-Pc/dp/B000FGA1US/ref=pd_sim_vg_4

and an alternate version for $15.88 http://www.amazon.com/Interplay-Baldurs-Gate-Compilation-Pc/dp/B000PSRN6Q/ref=pd_cp_vg_1

$4 cheaper than GOG.