Mine have not given me any issues or made me think they will break easily.
Yeah, Dodge loves to over charge for parts and you shouldn't have to replace the entire lid when just the latch is the issue.
Here's an idea... here is a link
to an eBay listing for Mopar locking latches. These will replace your broken latches and give you the ability and option to lock them if you so desire. This kit is also cheaper than what the dealer quoted you for just one lid.