We have a 4+ year old Logitech MX Revolution mouse that started to have issues with the left click. You click and hold to drag something and it would drop it and then re-click, all while you were still holding down the left mouse button.
Called up Logitech to see what they would do, I figured they wouldn't do anything since it was way past the 3 year warranty period.
Well, they gave me a 50% code to use on another mouse for customer loyalty and I ordered a G700
gaming mouse for $49.99 shipped.
This G700 was available during their "dented box" special for $52 6 weeks ago but I missed that sale.
Oh, and I was able to fix the click issue by taking apart the micro-switch and adjusting the spring portion of the contact arm. It's really small and took me 30 minutes trying to get the micro-switch back together.