Tools
When you need a quick fix, cheap tools are fine to use. In the long run, it is more beneficial to spend the extra money on this equipment because you will probably need them down the line anyway, so better that they stay in good condition.
Batteries
Batteries found in the dollar store usually are poorly made, so they run out faster. Most are not up to date and may even have leakage. When it comes to batteries, you’re better off going with the brand names.