I use one shot on straight wall revolver cases, if I am doing rifle use Imperial Sizing Wax made by Redding now.
The one shot just makes the progressive press work easier for loading pistol rounds even with carbide dies.
I shoot 12,000 rounds a year, so my primer's don't have a long shelve life.
But, keeping with the theme of the thread, because you paid 29.00 dollars that kept prices from going back to 10.00 dollars, shame on you.
I don't cry about high prices because Winchester Small Pistol were less than 10.00 a thousand when I started, so I got over sticker shock long ago.
Plus I have more money than time left to shoot.
Been married 44 years; the best way to get to stay in your reloading room is to commentate on every T.V. program your wife watches, she will definitely run you off.
Used over 10,000 foreign primers sense this mess started and one thing that has helped is putting the cases in plastic bag two sprays of Hornady one shot case lube, shake the bag and let dry.
Everything runs easier and the primers sear better.
It's easier to buy the die set from Lee than try and find just one die. Also try
https://www.titanreloading.com/product-category/lee-precision-reloading-equipment/
You could use RCBS or just check the linkage. The only place mine come loose is at the thumb screw; I just check it before starting. 115,103 rounds on may LNL's so far.