That "$40 fancy pro sealant" thing gets me because I read a thread on a home repair forum a while back where a guy tested a bunch of cheap caulk against the expensive stuff and half the time the cheap ones held up just as good or better. The price mostly pays for the name on the tube and pretty packaging. What really matters is prep, making sure the surface is clean and dry, and whether you got the right kind for the job. A $4 tube of the right stuff will beat a $40 tube of the wrong stuff every single day. What kind did you grab, the silicone or the paintable latex?