Here is my take...I am new also, but have studied quite a bit everyday for a couple months now...
I personally haven't researched any of these, but you might want to research the keywords in google.
I think you have
some decent, doable names:
megamallshop.com (don't like, too long..If it were just "shopping mall", it would be a lot better)
dollardayloan.com (I kinda like this, catchy name, and could be a good brandable, yet I doubt any exact keyword matches)
overstocktoyou.com (don't like, doubt any keyword matches)
candypick.com (Kinda like, and could be a good brandable, but think of your end user..Who is going to buy this? A candy store? You also have to think of what kind of budget they would have...I don't think a candy store would have a great one..However the game idea is great if you can find someone to develop it out, it could turn into big business..You never know.)
feetfx.com (Don't like. Don't know what the fx is all about after feet, maybe I'm missing something)
toefx.com (Don't like...Pretty much same comment as above)
plumbergear.com (I like this one, it probably has exact keyword matches..But you also have to look at the cpc, and how much traffic it gets with those keywords a month)
boostseotraffic.com (I like this one, as it also probably has exact keywords matches, and SEO business is big)
dealaplenty.com (Kinda Don't like it...Could be a good brandable for someone though)
Dplumber.com (Don't like...not even for a brandable)
cliqquick.com (Don't like..If it were ClickQuick, or QuickClick, then maybe..But could possibly be a brandable for someone..But I don't have a clue as to who you would target..Perhaps some kind of CPC niche?)
dogfooddeli.com (If there were dog delis around the world that you just stopped in and waited while your dog ate, then I might like it, but the possibility of that happening and taking off I think is remote. So I def don't like this one)
Also, it definitely doesn't matter what I, or anyone else on this forum thinks. It's all about what the end user thinks, and how you & they feel about the domain. If you have to explain it, it isn't worth having. Another thing I have learned, and am noticing lately, is that some names I think are horrible, sell a lot higher than I expected, and Some that I think are great names sell a lot lower..."Things that make you go Hmmm"..
Pay attention to what's selling high vs. what's selling low on Namejet, Domaining, Sherpa, and all the others...
Anyhow, It's all about what the end user thinks it's worth. Not any of us, nor any appraisal service.
I mean think about it...Who would have ever thought that twitch(dot)tv would have sold for millions? And some others...Really!
If it were posted in this forum, I highly doubt anyone would have even paid $20 for it...But now we're all saying "I so wish I had owned that domain!"
Just learn to do your negotiating correctly when you get offers..Try to look at your names from the end user/business owner's perspective...Why would someone want that name. If you were starting a business, would you buy that name? You have to think of it from the buyers perspective.
Also I definitely wouldn't put $100 OBO on each name, maybe with some, but not all. You do have a few decent ones...unless you're just wanting to get rid of the names, and be done with it all. You might just be leaving money on the table..Just be proactive, and patient...I think that's key in this business.
I hope this helps...Good luck to you! I wish you much success!