@MCAT2024 makes a good point about the actual percentage of customers who will bother with a boycott but if you order from these sites, you do generally know if you have been ripped off and this is especially true if you know the brand that you buy. Bensedin for example have been consistent for years and are harder to fake so unless we are talking about brand new customers, it doesn't apply the same way. I got pills which most likely contain no active ingredient whatsoever and there are two results on wedinos which look like the same ones in terms of packaging (no active component in each result). The funny thing is that both samples have different coloured text and so when they replaced the fake order with another load of fakes, they had different colour writing but were the same pills.
On the street, you are much more likely to get pills with an actual benzo in them as opposed to a tablet containing nothing at all (unfortunately potentially nitazenes too although I don't remember seeing metonitazine on wedinos in anything other than Bensedin fakes). But on the street I've purchased them now and then and they always have something, this is because they have a street market to supply and people will boycott pills that don't do anything because word gets around - it used to mostly be etizolam and is now mostly bromazolam. Its the same with smack on the streets. Smackheads are surprisingly vigilant when it comes to gear and word can get around about shit gear and people will flock to another dealer. The "street valium" market is so lucrative and the chemicals so cheap to purchase in bulk, press and then distribute around the country that they don't need to sell chalk tablets (although some people will if they have a pill press, some die and whatever it is they use, just to make some quick cash), but the purpose of these pills is merely to provide a benzo and people aren't expecting anything like "diazepam" even if they say "diazies" - they just want something that will work. But people who make the effort to go online, speak to vendors, order a specific drug and pay far more than on the street will certainly be more vigilant as this is a different market - these whole setups are for people who use pharmaceuticals regularly and are even set up to look like pharmacies in some case.
What I'm saying is that most people who purchase online are expecting the genuine article and are more likely to be vigilant - they are paying much more after all (on the street, I last got 25 for a tenner). I know of quite a few people on here who place regular orders with vendors and buy large amounts and they pay more because they know what they want and don't want to go up to some dodgy cunt to get it. We are the people who get their stuff tested, especially if we get fakes which we can tell from using certain brands. You can't always tell but Bensedin for example are really difficult to fake due to the consistency of the tablets and the taste, but the chalky shit they use to press fakes (as well as most street pills) tells you right away, even if there is something in it.
For me, it is about harm reduction. The vendor I've been dealing with has been genuine when it comes to customer service, replacing orders and all that (they are replacing the fakes and the replacement fakes with Rivotril and practically begged for me to not alter a trustpilot review). This is because they know I will spend money for the real deal. My usual vendor has only sent fakes once which I tested - they tried replacing with a different brand that I hardly see now and then replaced them once proper Bensedin were back. Of course most of us don't know what's happening in the Balkans or wherever these are pressed (Martin Dows are pressed far away, in India or something I assume. I am thinking of the Bensedin brand) but my assumption is that raids happen, possibly at the distribution end or the import end at any warehouse or stash in between. When something is clearly happening, which you can tell from a good vendor, this is when the snide ones get in. It could be the same people who distribute to the vendors or could be vendors themselves who have them stocked up for when this kind of thing happens. I reckon that they probably have no clue in most cases and just sell whatever they have purchased in bulk and then deal with complaints after. Most people wont expect to get a refund and will just end up boycotting the vendor anyway so they have made a profit and only lost one random customer, but as I am experiencing now, there are vendors that will try hard not to lose customers.
Anyway I don't think I'm making my case very well but I think it could be done. I think that if we knew of one vendor that was selling fakes, anyone who was up for doing so could place an order (just one box or whatever) and then all could complain. Leave bad reviews on trustpilot because some of the vendors take that seriously and this could pressure them. If people couldn't afford to place an order then they might send a message saying that they've heard that the goods aren't kosher and that they aren't sure about ordering. I think the way to do it would be by picking one out, specifically one that does care about customer service. Anyone who might use the vendor for other things and has no problem could stock up but join in. Some of the vendors simply don't give a fuck but in my experience, the ones I have used regularly or when my usual vendor is down do actually care about it. It is a business after all.