Look below both
(1) The process will require 13 MiB more space. --- 2 MiB to be downloaded.
(2) The process will require 70 MiB more space. --- 378 KiB to be downloaded.
What is the reason?!
pkg install
. The second downloads much less, but requires much more space:(1) The process will require 13 MiB more space. --- 2 MiB to be downloaded.
(2) The process will require 70 MiB more space. --- 378 KiB to be downloaded.
What is the reason?!

Code:
% pkg install dehydrated
Updating FreeBSD repository catalogue...
FreeBSD repository is up to date.
All repositories are up to date.
The following 5 package(s) will be affected (of 0 checked):
New packages to be INSTALLED:
dehydrated: 0.6.2_1
bash: 5.0.3
curl: 7.64.1_1
libnghttp2: 1.37.0
ca_root_nss: 3.44
Number of packages to be installed: 5
The process will require 13 MiB more space.
2 MiB to be downloaded.
Proceed with this action? [y/N]: N
% pkg install acme-tiny
Updating FreeBSD repository catalogue...
FreeBSD repository is up to date.
All repositories are up to date.
The following 4 package(s) will be affected (of 0 checked):
New packages to be INSTALLED:
acme-tiny: 4.0.4
python27: 2.7.16
readline: 7.0.5
libffi: 3.2.1_3
Number of packages to be installed: 4
The process will require 70 MiB more space.
378 KiB to be downloaded.
Proceed with this action? [y/N]: N