You can prepare an order online, anywhere in the U.S. and UPS the package to Meest/Bosmix. You can opt to let them puzzle out the customs forms, providing just a little information. It usually seems to take about a month, shipping by UPS ground, to Bosmix, from the West coast, and then by air to UA. I believe they hold packages at the main offices in both countries, for some days, until they have enough to fill a crate, or send a truck to a UA city. During parts of the shipping process when the package doesn't seem to be going anywhere, tracking is a bit vague.
What they are really good at is ultimately delivering reliably while making shipping very simple for the customer.