Yep - many times I went into my local knife store and handled a Benchmade 610 Rukus, only to pass on buying one.
When I finally decide to add one to my collection, they were discontinued, and no internet retailers had any left in stock. You know - the old "day late and a dollar short" thing.
They were snapped up on the Exchange before I had a chance to even see the post.
I stayed diligent and was lucky enough to finally get one from another forum member. Then once I found one - I went on the hunt for the wood scales Benchmade produced for the knife. It took me a long while (even called BM to see if they would make a set for me) - but I finally found an internet retailer that had one set left and they let me have them for 50% off.
Total time spent - several months.
They can't all be easy purchases - where's the fun in that??