Where is the best place to get screen protectors installed at a decent price?

I am sick and tired of wasting screen protectors. Their quality is so up and down, I have installed some flawlessly, others like the 3 I just ordered for my 2013 N7 were all terrible. Tried the wet method as well on the third, and it is still bubble central. I would rather just pay someone to apply it absolutely perfectly. Anyone know of stores that will supply and install one for a decent price? Thanks,

I am in Ottawa btw.