Seachem product from Drsfostersmith $10.00 shipping
Each bottle cost you $4.99
$45 gets you all Seachem ferts delivered to your door
If you have over a 50 gallon tank I would get the dry ferts instead for about $42.00 shipped to your door.
But then you have to mix your own and keep some of them in the fridge. Some only last a couple weeks to a month so you have to make smaller bottles of those.
Local fish stores in my area want between $10.00 and $14.00 per bottle plus tax...