Homer Laughlin products were made in the USA, in Ohio and West Virginia. For detailed information on Kovels, you must first create an account. When looking at prices on eBay, you have to take them with a grain of salt. Just because someone asks for a lot of money doesn't mean they are going to get it. Of course prices for Laughlin dishware is all over the place and depends on if that particular product is in demand.
There are books available online or at the library to help you understand what you have and the value of various products:
"The Collector's Encyclopedia of Homer Laughlin China Reference and Value Guide" by Joanne Jasper.
"Homer Laughlin China: Guide to Shapes and Patterns" by Jo Cunningham.
" Homer Laughlin: Decades of Dinnerware, With Price Guide" by Bob Page.
These books may help you learn about your pieces and the various products made by that company. However, they are a few years old so the prices may be out of date. Find out how much your specific items are selling for by searching out current sales. Try online auction sites other than eBay and look at "sold" price. I think that Etsy often offers goods at reasonable prices.
When shopping for just about anything, I often disregard the highest and lowest prices.