And how can i find out where to sell an item for more money? i don't see how I'm supposed to know without going to tons of places and writing the numbers down and hoping the other places buy them etc, seems way over my head?
Rule 1: Know where you're going to sell it before buying it.
The way I do it is to look for likely pairs of stations - For example (this is from memory and may not be accurate, it's also from gamma 1.0 so may not still represent a good route) Fular is a high-tech/refinery system 3.5ly from Opila which is listed as industrial. There's almost certain to be
something that can be traded profitably between those systems but I don't jump at it yet. Need to look in more detail. Looking at the system views I see that Opila has several stations, almost all of which are industrial but there's one station with an agricultural economy in there, and it has a commodities market. Minority economy stations always pique my interest because it's likely to give a trade that hasn't been saturated by other players and npc traders. I decide this one is worth a look for a number of reasons.
- It's short hops. I won't need to refuel often.
- It has a high-tech station and several industrials available, all of which are high population. This maximizes the chance that they will have upgraded modules for my ship for sale.
- Minority economy station. Likely to be some "unusual" trades that are more profitable than they "should" be.
So, I fly over there with empty holds and check out the main station in Fular, the agricultural station in Opila and the nearest industrial station with a commodities market. At each one I make a note of high or medium supply items selling for below galactic average (along with by how much) and high or medium demand items wanted for above galactic average. Anything that matches up between two stations is a good trade. I find a couple of items that can trade profitably - and this next part is important - then, having planned my three-cornered route, make another note of how much I can sell whatever the station I'll be coming from can supply me with here. The route ends up as superconductors from Fular to the industrial station in Opila for 48k profit (full hold in a Cobra), Marine equipment or Crop harvesters to the agri station for 25k and then back to Fular with a hold full of fish for another 18k. 91k profit for a 7ly round trip. Along the way I find out that the high-tech and industrial stations do indeed have a good selection of upgrades to my modules and weapons.
A few sessions of running that route and fighting off pirates along the way, all the while taking missions that send me somewhere I'm going anyway, and I've a pretty well pimped Cobra and can afford to pay cash (no trade-in) for a type 6 and upgrade it so I can continue the same run at twice the cargo capacity and therefore double the profits.
ETA: It's worth noting that two of the items I was trading didn't, at first, look like they would be profitable. The superconductors and Marine equipment didn't "match" on my initial lists because in both cases the destination was buying below galactic average prices. That's why you make sure you note the corresponding price "here" of whatever you can buy cheaply "over there" the first time round your route, even if it doesn't look good at first. When one station is selling for 900 below average, the fact that the other is buying at 100 below still makes it profitable, although looking at the market on the second station alone you'd probably have skimmed over that as likely to make a loss.