The liberation kit includes the replacement screws, and a philips #00 screwdriver, as well as a pentalobular driver.
$10 is perhaps a bit pricey for some people. I have no idea of the quality of those drivers, but I've spent well over that on single items before.
Paying £30 for a pair of tweezers seems crazy to some people, but if you're using that item for 8 hours a day it makes sense to buy something that you really like. And having spent that much on professional quality tools I'm not fussed about spending £7 on a couple of screws and a couple of screwdrivers.