I was thinking about selling them for $ 100. Would that be a reasonable price?
AS MattChuck said, it really depends on the condition of the edges and bases, and what model they actually are. I tried to figure that out but couldn't from your blurry picts... what's the name of the ski?
look at the edges (the metal side parts) - any deep cuts or gouges?
look at the bases (the part that touches the snow) - how badly scraped up are they? Any cuts that go through the base layer into the core of the ski (aka "core shot"?)
what's the length of the ski (in cm - often written on the ski in small print somewhere)?
If the edges/bases are clean you might get more than $100. If there's a core shot or delamination then they're largely worthless... good only as a training ski - you might get $25 for them.
Boots are uberpersonal. If they're lightly used you might get a bidder, otherwise if the liner has been packed down to someone else's foot it's unlikely it will fit anyone else very well. What condition are they in? you can always grab them and then throw them out later.