Both are outstanding kits. I have both (twice the CL-215) and hope to start them someday. When you open the box, you are going to be surprised by the numerous rivets that are molded onto the parts, but resist the temptation to sand them down 'cause although they might be a touch too prominent for 1/72, they are VERY visible on the real machines. The joint wing/fuselage can cause problems and getting rid of the joint will erase some of those rivets. That's where dimensional fabric paint comes in handy. The cockpits and cabin are very decently detailed but of course one can always improve. My only regret is that there are no aftermarket decals for machines from Greece, Spain, Venezuela, Thailland and the various provinces of Canada... I have lots of reference and drawings/pics of details... I could always copy and send you what I have, if you're interested.
As far as prices are concerned, one can find them at $8-15 at shows, under the tables... I do not think they are in Heller's catalogue right now, but they are often on e-Bay for that sort of prices too. I would not go over $20 for any of them though, 'cause they are still plentiful... If you have big troubles finding the -215, I could always part with one of mine...