Alternatives to Ultramarine Blue: Army Painter Primer?

I've been plagued with cans of Ultramarines Blue spray paint that just don't work.  I must have ten cans of this in my garage which are mostly full, yet they refuse to spray and I can't come up with a solution to breathe some life into them.  As a result, I've had to find a…

The Army Painter Warpaints Review for Miniatures & Wargames Models - FauxHammer

After trying every single blue combination known to man, I think I've found a recipe I like. Macragge blue (in the background)is too purple for me. What do you think? : r/Ultramarines

Army Painter Colour Spray Primer - Ultramarine Blue

Army Painter Ultramarine Blue Colour Primer, 11,45 €

Colour Primer Spray (400 mL) - Ultramarine Blue

Product Reviews, Warhammer 39,9999

Quickshade Washes from The Army Painter Make Painting a Breeze!

The Spray Paint Test – Games Workshop vs Army Painter vs TTCombat – Langden Games

First time painting Ultramarines and haven't found the right colors. What do you guys use? I'm struggling : r/Ultramarines

Stone Columns Set of 4 –