For now, yes. Both games seem to have shot up in price in the last couple months. They used to be around $40-$50. Perhaps they'll fall back down. Perhaps they'll stay insanely expensive.
On each game's page, on pricecharting.com, there's a chart that goes over the historical prices of the game. CIB = Complete In Box. So just click on that at the top of the price chart.
Fair enough. I put my collection in as I was curious. I still think some prices look a little steep and don't reflect what I've seen when out and about, but it would be nice if I actually was sitting on somewhere between £500 and £600 worth of stuff.