Here's a well used set I bought from Ebay last year for $130 US and refinished (almost cried when I saw the condition), sold it for $90 as shown on the EE:
Think I paid $90 for this mismatched surplus wood on the EE and was able to match it pretty good when I refinished, sold it for $130:
My very best surplus set (came out the nicest, can't find the pics), I paid $130 for it on the EE and sold it for $225 with brand new hardware that came with the beat up set.
Here's the surplus set I bought and refinished on the EE last fall, cost me $140 shipped (thought that was top dollar for surplus wood). Bought the extended pistol grip on Ebay for $29 and tried to match it as best as I could. Happy with what I have... These sets didn't look like this when I bought them, needed a lot of work. Every set needed minor fitting except for the beat up used set which fit like a glove as is. Just wasn't happy with the wood fill, dents and marks all over it.
What the stuff costs today, is what someone is willing to pay for them. There gets a point where it's not worth it and you pay the premium for the best product on the market (IWD), then acquire the hardware elsewhere. I was looking for Mossberg 500 wood on the EE, everyone wanted $100 for their beat up wood... finally found a guy with some spare wood sets and got 5 sets for $130! The old cheap wood turned into this:
Good deals are out there, just have to look and be patient.