If your test kit is new, you may have static electricity on the tip of the R-009 which will make smaller drops, which will mean more drops, which will lead you to a falsely high reading. But unless you have really high CH, to the point where CSI is a big worry, don't worry about it. TA is not really critical, normally.
Even less critical is the phosphate level. If you maintain adequate FC to keep the water sanitary, you've automatically got it high enough to keep algae at bay, regardless of the phosphate level. Save your money.
It's pretty sad that it's a surprise when store values line up with your values. They should always be really close; same sample water, right? But the ugly fact is that most of the time they don't, which leads to confusion and doubt, and the testers at Leslies are, after all, salesmen first and they can be pretty convincing. Those free water tests are there to generate sales, not as a public service. Test yourself and trust the results.