Ha I just realized how funny that topic could be out of context

Anyway, I was wondering how long different packers tend to last before they need to be replaced. I know there must be some difference between those $12 bubblegum pink varieties and something more of a prosthetic (like lolajake) that costs a couple hundred dollars. I mean, you'd think if you were going to invest that kind of cash into something it would last awhile yea? So I'm just trying to get a general consensus on how long each type/brand lasts and see if it's really worth it to splurge on a more expensive one.
Also, just a mini rant - why do companies make these with flat balls? WTF is up with that? I mean, balls are obviously 3D. I know some of the more expensive ones take this into account but the cheap ones never seem to. How much harder is it to change the mold or however they're making these things for that one accommodation? Lame.