I just looked at ticket prices for Rams home games and it looks like they have introduced variable pricing this year. I didn't notice it last year so as far as I know this is the first year they have done it.
Looking at tickets available directly from the Rams (as opposed to tickets being resold) I found the following prices for endzone seats (Section 113 or 114). Note that all tickets that the Rams sell in these sections are priced the same as far as I can tell.
Preseason
8/24 - Denver $55
Regular season
9/15 - New Orleans $149
9/29 - Tampa Bay $85
10/13 - San Francisco $120
11/17 - Chicago $196
11/25 - Baltimore $100
12/08 - Seattle $119
12/29 - Arizona $85
AlbaNY_Ram