Craftsy is currently having a summer sale for art supplies.
I'm not sure about other art materials but the 15ml Daniel Smith watercolour tubes are about USD $0.50 - $2 cheaper each than on Amazon, and certainly much cheaper than Blick or other online stores. There's free shipping for $99 and above within USA.
Out of the 35 colours, only the following four are more expensive on Craftsy.
1. Yellow Ochre
2. Quinacridone Magenta
3. Quinacridone Gold
4. Neutral Tint
My personal recommendation would be
Hansa Yellow Medium
Quinacridone Burnt Scarlet
Permanent Alizarin Crimson
Phthalo Blue (Green Shade)
Phthalo Green (Blue Shade)
If you want to check out the whole range of supplies they are selling, it's at https://goo.gl/CFVENJ