UPDATE:  Read this section of a Wikipedia article about "The One Million Dollar Paranormal Challenge" http://en.wikipedia.org/wiki/James_Randi_Educational_Foundation#The_One_Million_Dollar_Paranormal_Challenge -- it relates to this guide.

If you try to discuss metaphysical items on eBay, many people will laugh at the idea and say that it's nonsense.  Oh sure the metaphysics exist and people do work with it, but most people don't believe it's on eBay.  Sure sellers may embellish what their items can do and there also is a shill bidding ring compromised of a dozen or so power sellers out there, but there are a lot of real sellers, too.

Firstly, if a seller is selling a potion as something metaphysical, the potion is not supposed to be drunk.

Secondly, if someone says their relative passed away and left them haunted jewelry and they sell more than 50 (especially if they have hundreds of say "get out of debt"--was their great aunt really in so much debt?), the seller is casting the spells themselves and giving the deceased line because they either think or else have found that it makes their items sell better.  Some aren't clever about this but one was really clever. The clever seller claimed she obtained some items belonging to someone (and that someone of course had an unusual and old-fashioned name) and that someone turned out to be a witch and then the seller posted lots of "oh my god [witch's name]" through their auctions and about page. I saw through that right away, but that seller's items sold for over a hundred dollars each time and the seller being clever, eventually claimed to have found the witch's old coven and now sells things made by that coven's leader (using the first and last name of the coven leader all over the place).  A seller pretending not to have done the magick-work themselves also gets them out of having to explain how they're good at spell-work and spirit binding, but no good doing psychic readings.

A real legitimate seller will be able to admit in their auctions that their spells and spirits have some powers but like all paranormal things found so far by science the powers are weak; a fraud seller will claim they are selling spirits attached to the items that have unlimited power.

One seller I recognize because I've heard of them since the late 1990s (I won't name anyone here, this guide is just what to look for).  That seller wrote a book, once tried to make a paranormal community for psions, and so on.  There are many other legitimate people besides the one I am giving in this example, but this one is rather well known.  This person sells astral plane constructs attached to pendants.  I googled the seller's username without the underscores and found an article about them on Encyclopedia Dramatica as the fourth google result. It was criticizing the person because their psychic powers couldn't cure their acne and had a picture to prove it.  So, I asked the seller if their items could cure things like acne and the seller said no, they are not powerful enough.  The seller's auctions also don't claim the items have unlimited power.  It just goes to show the different between honest sellers and the ones that claim their paranormal items have unlimited power.

In contrast to this, I remember one paranormal seller who when they first started had supposed self pictures of herself and her husband and claimed they were over 100 years old and they used pictures of famous people who lived over 100 years old as their supposed self portraits. That seller, who started the shill bidding ring ESPC and is now the secret leader of the shill bidding rings UAMD and "S.P.I.R.I.T.S." (although not listed in their official member list), started a posting board to draw in the buyers of her failing business. Unfortunately, she uses the board to promote her group of sellers in her shill bidding ring while ripping apart other sellers.  She is one of the worst sellers out there because she destroys the reputation of the many legitimate metaphysical while glorifying fraudulent sellers. A real paranormal seller would not do that.

If someone says, "this is the most powerful metaphysical item on eBay" type of thing, it is not.

This advice should be obvious, but a lot of people fall for the "unlimited powers" claim.

A seller doesn't need to be somewhat famous or anything to be legitimate.  Science found evidence of the metaphysical, though it has also found that the metaphysical is weak and the results are unreliable.  There is a very large amount of people who work in the metaphysical, but most don't sell on eBay because making an effective item takes a long time of work and the business can't really make one a living unless their items sell for hundreds or thousands of dollars.

There are of course sellers that sell items that have different levels of power.  Enchanting and spirit binding to an item takes a lot of work, so if you buy an item for about $10 or less (with shipping) then it's probably not that strong.  But buying something $100+ may just mean you bought something overpriced.  Something $25-$50 with shipping is a better way to evaluate as it pays for their time to do some work.  You basically want to find out: is this person any good?  You can't always go by feedback because if someone says something like "only people with 10 feedback or above can bid" and things like "no private feedback. no negative feedback receive or left can bid" then their feedback is going to be really inflated.

Spending over $100 is not until after you have verified the seller's items work for you and some a seller's items may work better for some people than others. Also keep in mind that selling a paranormal item isn't like selling regular products.  A paranormal seller is bombarded with endless emails of questions about the paranormal and spends a huge chunk of their time just doing emails alone.  After the item is sold, the paranormal seller has to provide a lot of technical support.

Selling paranormal items is not "the latest scam" like some guides say.  Selling paranormal items isn't even that profitable due to the time involved.  The real profit on eBay is in selling brand name items.  In contrast, selling paranormal items is more of a way for a seller to prove to themselves that if other people find the witchcraft that they are doing is helpful, then they really do have some powerful gift and it's not just them doing some new-age things with a small group of people.

Sometimes people will cast a spell and the spells are just weak.  In other words, basically there should be some way to notice the paranormal item.  A lot of people can do some work, but sometimes it doesn't come out that strong.  You won't notice it in the same way, necessarily.  If you are able to notice something from it then it means whoever cast the item be it the seller has talent or the seller and their coven have talent.