Their prices are very affordable even if it would increase during this peak season for flowers.
It's advisable to get there early cause even though flowers are delivered to them several times a day, the sheer demand for flowers during Valentines day may cause flowers to be sold out. You'll see cars parked all around them as the days come closer to Valentines.
I personally get my flowers from my suking florist, June & Chat flowers. They can create custom arrangements based on your requirements. Look for the morena with the smiling face and she'll happily assist you.