redmeansdistortion

Two totally different things, although many think it's simply UL fishing with a baitcaster.  Most UL spinning rods have a parabolic blank which is typically only suitable for smaller species like panfish and smaller stream trout.  BFS rods use a progressive taper like that of a fly rod, there is less bend the closer you get to the butt and the blanks have a much faster recovery than a parabolic taper.  A progressive taper lets you apply heat to a running fish, even bigger fish like steelhead, lake run brown trout, and Atlantic salmon.  Those will quickly take you for a ride on your average UL or L spinning rod.
 
BFS rods come in a variety of flavors from UL to ML, even M and MH rods are available from some Japanese manufacturers.  Bass rods will usually be a faster action and rated for heavier line than their trout counterparts.  This is because bass aren't line shy by comparison and occupy heavier cover so you can get away with thicker line.  Fishing bass on a trout rod is a lot of fun because the more limber tip will keep the fish hooked through every surge and head shake, plus allow you to run lighter line if you choose.  
 
American fishermen really have no concrete definition for BFS which is why most associate it with ultralight fishing.  In Japan, baits marketed for BFS use can be up to 1/2 oz in weight while here many consider anything under 1/4 oz BFS territory.

Now that you mention it, the shipping estimate is fairly accurate.  The big thing to look out for is you truly have no idea what shipping will run until you finish the checkout process.  You pay the seller/store, they ship to Buyee, and Buyee will give you the shipping price once the item reaches their warehouse.  You may get double dipped for shipping if the store doesn't offer free shipping, but shipping within the prefectures is usually fairly cheap either way.  If you want to save on shipping, you can have Buyee ship all items together even if they came from different stores/sellers.

Facts!  I've never had to wait longer than 4 business days.

For those species and something that won't break the bank, look into the 4'6" to 5'6" Okuma Celilo.  I don't think there's a better ultralight rod for less than $30.

Trout fisherman here, try an Albright.  It's small and shouldn't cut through your leader.  It's really easy to tie on the water as well.

Welcome to BR!  You don't have to stop when the water freezes, tasty perch and walleye to be had through the ice, plus you get steelhead from Lake Erie hitting the rivers.  Dress warm and jig up some dinner!   For keeping my hands warm, I wear those convertible mittens that let you fold the finger portion over to expose the fingers.  You'll still get cold, just not as cold lol