Gerber is crappy in my opinion, they have a lot of QC issues. I had one with a liner lock that failed constantly and I just had enough of their bullshit. The knife I had wasn't even one of their cheaper ones either, it was designed by Rick Hinderer and was their flagship knife for the year
Looks like you got a couple slipjoints, so there won't be any lock failure since there isn't a lock, but I can already see the gaps between the bone and the bolsters in your pics, which is bullshit. But for 10 bucks, I wouldn't sweat it.
Next time you have 12 bucks burning a hole in your pocket, look up the Kershaw Half Ton. Better steel, better lock. Not as pretty necessarily, but it's got Kershaw's QC and tolerances. Great little knife for just working, not showing off