You should offer to make all of the standard pokeballs at $5 and offer custom at $7.50 .
Standard would be like pokeball, great ball, ultra ball, and master ball, with possibly premier; luxury; nest; quick; net; and dusk balls.
Custom would be a good idea to be literally custom, one that follows no standard game design but a person's characters pokeball, like a change of colors or design.
Well, this is just advice, it would attract alot more customers, and offer slightly more income.

The problem with trying to do certain designs is that the shape of the board used for the circle is a little different- I will try but at the moment I will stick with what I can do so far ^^

This is how proper pokeballs should be done! with breathing holes

is it upsidedown?

No idea which way Pokeballs go to be honest...XD

i thought the red part was on top

They do, it is upside down :P