FWIW.
If you are going to go through the exercise, don't get concerned about money. It's not about who's cheapest. You often get what you pay for.
Quality long stem roses, thorns clipped, wire reinforcement at the base, each individually with it's food and water (a little capsule the cut base fits into). Shop, I'm guessing about $60.
And very important-delivered by the florist in a box. They know how to do it. White box, bow of your choosing. I always used yellow, as I always bought her yellow roses. Sometimes yellow and white, or yellow and red...it's OK to mix. The box is important.
If you aren't sure if she has a rose vase, buy a crystal vase from someone reputable at the mall, and have them ship it to her address. Doesn't have to be Waterford, Mikasa is fine-and is probably on sale. Maybe $30-$40.
Coordinate the deliveries the same day, or a day apart, Vase first. Make the effort.
Trust me.
If you can't be there, have a bottle of decent, but not extravagant champagne delivered as well (Piper is not bad, budget wise), unless you want to go higher, and maybe a couple of champagne flutes or bowls from the same place you got the vase.
Whether it's the woman you admire for yourself, your sister, a friend or your mother...
They will always remember this Valentines.