Some sources can afford to take lower profits than others. This is why we see some offering gear in the same dosage and with the same carrier oil for a bit less than others.
Then, have to factor in competition- While it’s not Walmart vs Krogers over here (or whatever your local supermarkets are named), sources still want to sell their stock and make an income off their work. So, they might drop their price a bit or run a sale or something to get more customers. Totally normal.
For the most part, all the sources here are held to a pretty high standard as far as actually filling vials with what they say is in them. Running Tren from one source vs another isn’t like eating a Big Mac and then eating a Whopper; It’s basically the same shit. I might rustle some jimmies with this post, but it’s the same drug. There’s pretty much nothing you can do to make Tren Ace from XYZLabs work differently than Tren Ace from BigBootyLabs.
Now, one exception is Southern Compounding; They’ve got Tren with a carrier oil that nobody else is using and they’re selling it for waaaay low compared to other sources here. The trade-off being, that oil might not sit right with you whereas someone else can pin it no problem. That’s the only exception to all of this. No offense to any other sources but realistically if you can handle Southern’s half-priced stuff as far as PiP goes, then that’s your best route for Tren in terms of price.