Update: It's been exactly 7 days from when they first went into soil and absolutely no sign of sprouting! Are they dead? Should I keep waiting?

The seed that germinated late has been there for 5 days and that also didn't sprout.

Damn expensive seeds! I can't afford to fail!

The only one to sprout is looking healthy!

Don't know what else I can do? I have kept the soil moist (not wet) and warm the entire time! (at night it's like 20C / 67-68F)..day is like (30C/ 86F)