Tis a true point! With 8000+ R44's in circulation, prices have dropped rapidly, consider 2 years ago, who would of thought an R44 would of been AVAILABLE for purchase for anything less than 230k!? Just to think, you can now buy a extremely low hour R44 for the same price you would as a brand new R22 from the factory!
'Helidata' seems to be quite a good helicopter sales brochure, comes out monthly i do believe, mainly deals with the british isles, but sure it would be worth a look anyway!