Comparison between 2 nurseries: (My experience buying Lychees trees at Mimosa ELA and other nursery) in Southern California:
15G Mauritius fr Mimosa East LA: March 2015 $90
15G Brewster fr. other nursery: March 2015 $90
Same prize, size and month of purchased, but:
Seems like the 15G fr Mimosa's roots had been filling the 15G pot for some time..., while the 15G fr the other nursery: I see they uppotted recently to 15G. (I can see the old smaller pot "soiled formed cylinder...").
Note: after 2 years in the ground, the Mauritius has been growing over three times as big as the Brewster...