In that price bracket, Id recommend the Iberital challenge doserless. You will get a little change out of $300. It is a great entry level stepless grinder with worm drive adjustment.
If you need to switch between coarser grind for a plunger and espresso grind though, the challenge will become frustrating as adjustment would take quite a few turns of the worm drive.
If youre buying for both, probably a nemox lux or perhaps the Sunbeam one (cafe series) if bucks are tight.....I gather that the Nemox has smaller steps than the Sunbeam.
Attilio (fresh_coffee) of Cosmorex can supply either, I think- and I can supply the Challenge. I have stock of the challenge with chrome body and you could check with Attilio on the Nemox...
Hope this is of assistance *;)