Agree that maybe the dealer should offer you something.
But my take on slide awnings is that they're not worth it (even if free). Look at a few that are a year or two old. They really start to sag and age rapidly. The sales pitch to me was that they keep leaves and debris off the slide top. But that's really easy to brush off by carrying a collapsible ladder. And when it's windy, the awning really takes a beating, noisy and can't be stowed. And since they come out every time you extend the slide, they sag due to rain and must be rolled up wet. Wet leaves on the awning just roll up in the awning.
But that's only my opinion.
I think the dealer should offer you a gift certificate for trailer/camping merchandise.
2012 FunFinder X 210UDS
4-68 watt flexible panels; 1-215 glass panel/4 Battle Born LiFePO4 Deep Cycle Batteries
2014 Ford F350 6.7 Liter PowerStroke V-8 Diesel longbed, SRW