Nutrients for flowering in soil

I've been trying to find some nutrients for the flowering stage at a reasonable price, and I haven't been able to. I've seen flora trio for around $37, but right now I really only need the micro and the bloom, but I can't find just those two at a reasonable price. I was looking at the botanicare line, but from what I saw, you would need some form of micronutrients for it too. Then I saw these Advanced Nutrients on amazon, but haven't heard too much about them, or whether the "PH Perfect" technology would benefit me. What nutrients do you guys use for flowering, would love to hear recommendations of around $30.

Real soil or bx soil. Either way it makes its own adjustments in the soil 1/4 strength don’t adjust ph.

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