Well, I'm skeptical that it would be a good idea for me to upload my Order and Tour object libraries, and I don't expect anyone to sift through all my code and debug it for me. What I'm looking for is a good direction in which to direct my diagnostic efforts. Under what conditions can I take a string "110.98" and not be able to use it in numeric context? I thought the answer was "under no conditions ever for any reason under any version of Perl" but clearly I'm wrong.
That said, I'll chop out the code that spits out the values and isolate them and try to get a manageable test case.