To Canada and USA it might take up to 10 business days, to other parts of the world it can be even a month or two. I do not have any control over this.

To grow Sinningia Consinna Seropedica from seeds you can use a shallow container filled with peat moss mixed with Perlite (with no fertilizer added) 1:1. It should be wet but not soggy. 

Spread your seeds evenly on top of your soil by tapping on your hand holding the package and cover with transparent lid. Place in well lit place and practice your patience :). Seedlings can start to emerge from 2-3 up to 8 weeks. From time to time you need to mist them using a spray bottle. When they have 4-6 leaves you can spread them out by gently lifting with a toothpick and placing them onto new place. Or simply put them back on the same spot if they are already at a good distance from each other. (if you are too scared to handle those tiny ones you can wait another little while till they grow a bit bigger). Then you repeat the process every 2-3 weeks until they are big enough to go into their individual containers. Surprisingly, this gentle root disturbance promotes the growth and you'll get them to bloom faster.

This is one of the ways to grow them.