I paid about 700 bucks for my Para back in July and it has all the bells and whistles, tactical safety, skeletonized hammer, match grade ramped barrel and trigger assembly, power extractor, everything! As I've said, it's far more accurate than I am.
I would think that the MSRP of the GI Expert at 599 could be bought for about 450 bucks retail. It's pretty basic like the Springfield or Colt and I've seen the Colt A1 down at Cabelas in Hartford for 475...