I think the TV tie-in comics (ST, Twilight, Boris, LIS, etc.) will always command higher prices due to the influx of additional collectors from their respective fandoms.
Solar, Magnus, and Turok for that matter, may have a few additional collectors from Valiant but I doubt it. Magnus also has the Manning collectors. Here are where the more traditional collectors are in my opinion and where you'd be likely to see any fall in prices if warehouse copies became prevalent in the marketplace.
You can still get Grimms, Ripleys, and Spekters pretty cheap in relation...
Jim