just a link, Wim. I am sure that there are many places to beat those prices. But, on other parts of that site, he shows how to use things. That is free info.
I pay a lot of the glass bottles and the separate caps. And I use Hematite beads (Can't shatter, and can't rust)
As for the worries about plugging,,,,,,I never turn the Vallejo bottles upside down and squeeze them, there is no control that way. You just shake the heck out of your paint, tip the bottle to the side, and gently dispense the paint by drops. The glass bead won't ever get up there to plug anything up then.
And as Wim and I can both testify, it is perfectly all right to shake paint,,,,,,,as long as your bottle system is set up for it. Model Master jars don't come with caps that allow shaking and long paint life. Change the caps, or use any poly bottle and you get the "drip-down" that is needed for long paint life.
05. October at 20:38:09