I've found a product that you can acquire cheaply and sell at 400% profit and you're still undercutting the competition.
The market isn't that big admittedly, but I've noticed a seller who has made around £600 profit in the past month. I've bought his product and mine compares favourably - you'd be hard pressed to tell the difference.
I'm looking into it myself, so I'm not sure I want to share the details. Although, since you're in America, Truthseeker, you wouldn't be stepping on my toes. The legality seems a little different over there, but it's still above board.
Anyway. Today I got a package. It contained approx 200 of these items, or 1kg.
On Ebay, 10 sell for £9 inc delivery.
0.5kg sell from between £20 inc delivery and £40 inc delivery. Quality doesn't vary drastically and as far as the buyer is concerned they're all the same.
I got 1kg for £10 from an alternate source and I dare say I could make a bulk order. Possibly getting 10kg for about £70.
The problem is that it's not an incredibly popular item and my worry is that the sellers on ebay have the market covered, although undercutting them is sure to attract some of their regular customers or people wanting the better deal.
Legally, it's all above board, but I'll say it's a slightly grey area. There's no way you could get into hot water over it, but it's a bit tongue-in-cheek.
The thing that confuses me is why nobody really undercuts anyone else. A few do, but there is one established seller and I assume it's a lack of trust. Better the devil you know (through ratings, number of sales). There've been a couple of people trying recently, with slightly lower prices, but not signifigantly. I could sell everything at half the lowest price on ebay and still make 200% profit, easy.
Gah.. Anyway. It looks good - relatively low outlay, legal, product sells regularly (although not that popular) and people should buy the product. Taking the amounts of this good and profit into consideration, it isn't something you could retire from, but it seems an alright way to make a quick-ish buck.