Help me value and sell some of my creations

I'd like some help from you guys.

I need to clear up some room in the garage. I have a bunch of projects that I've done through the years that I've kept. But they are now in the way of the next projects and gathering dust. I tried to put them on the local Kijiji, but I got no responses. Even made a little webiste to tell the stories.

Maybe my prices are off? Maybe I'm not reaching the right people?

What do you guys think these things are worth and where should I put them for sale? I'm in Montréal, Canada, so keep that in mind.

Here are the items I'm trying to sell:

My tadpole recumbent trike bike:

The page with the info about it

The little speedster that's my avatar: info here

Both of my little ride-on airplanes:info here

Any help would be welcome

Wow, cool! If you were closer the stuff would be tempting for my kids. But (1) I have the same problem as you and (2) I notice you don't have real size or age ranges the kids stuff is appropriate for. That might help. I have no idea how to value home built stuff like that. It's both priceless and yet not, if that makes sense. I feel like the planes are something you could get real money for if you could find the right person. Maybe if you could ship you could post them on eBay and / or Etsy. 

Oh, man, the airplanes. Up at Oshkosh, a guy sell kits for aircraft about that size. A little more elaborate, but the kits start at $350.00. It's a kit, so you still have to build and paint it.

In reply to dculberson :

Thanks for the comment about the size. I added the overall dimensions to my add for the speedster and got some replies. Nothing serious yet, but at least it's a start.

In reply to fanfoy :

You could easily sell plans for the cyclekart and planes. Not too much outlay producing rolled up plans once they are drawn up.

Appleseed said:

In reply to fanfoy :

You could easily sell plans for the cyclekart and planes. Not too much outlay producing rolled up plans once they are drawn up.

I actually did sell some plans for those a few years back on eBay. I may try selling them again.