some of the shields are not priced properly for their stats. Look at heavy kite shield and heavy heater shield.
Heavy kite is better is every way, but costs less. Heavy heater has ONE more width. Width is nice, but 1 point doesn't mean anything in the real world...yet it costs more.
This is an example. There is no purpose in using the heavy heater shield.
Low tier shields are ok in my book. If you have 1 or 2 shield skill, you're gonna get a shield that can block some arrows and take a couple melee hits. If you take 3 skill you can get decent shields....same with any equipment...low tier items kind of suck!