I still buy from Australian and USA hobby shops but for large O scale items most of the time its ebay. A few observations about ebay from an overseas buyer.
And I do buy from advertisers here on the Forum if they will ship to me and have what I want.
Ebay:
Bargains: Very rare sometimes I have jagged some by buying lots but you don't see a lot as someone mentioned could have been Marty.
Descriptions: There are two, one is price the other is the item. The price make sure it is for either a single item or multiple I have been caught thinking the Item was for two when it was only for one now if I am not sure I ask or walk. The item, where do you start. If the item is described as BRAND NEW I take the chance and so far that has been kind to me USED I would never buy a locomotive that has been used (yes Marty I agree!) unless I knew the owner (sometimes hard on ebay) or it was going for a ridiculous price and I only wanted it for spares. talking about prices if you bid against me and I really want the item be prepared to pay a high price I don't snipe the other buyers if someone does that to me I say it's my own fault I should have bid more some sellers must love me!
Shipping: it's written there in front of you either live with it or walk it varies a lot don't rush in, wait and observe the next day you might find the same item different seller with half the shipping costs of the previous seller, this is one of the things I like about ebay the costs are right in front of you most of the time you have the choice to buy or walk some hobby shops can't tell you the shipping costs straight away and this is risky because you might find yourself up for a massive shipping cost because they insist on sending at the highest level with insurance and please don't take this the wrong way I fully understand that Australia is a long way from the USA and the hobby shop wants to cover all bases but getting back to costs I still like to know before I click the buy button. I must say in the last few purchases from hobby shops the freight to Aust was right in front of me before I finalised the deal so things are improving and I appreciate that hobby shop owners!
Sellers: If you use ebay a lot like me you get to know some of the sellers and can trust them I have even made a sort of friendship with some but I still only buy from them using ebay if something goes wrong at least I have some kind of recall believe it or not in over 300 transactions I have never had to call in ebay to sort something out.
Overall: you have to be patient and not rush in I have to do a lot of research on certain items take the MTH side dump cars I never knew they existed till I happen to see one on ebay and thought they would make good cars for the Steel Mill so I researched them till I convinced myself they were near enough to scale for me now I have eight of them and really like them.
Courtesy: it is polite to reply to the seller if your happy with your purchase and give them 5 stars I would expect the same for me as a buyer.
There are probably other thoughts I could mention but I don't want to tell you everything who knows I might be bidding against you tomorrow! Grin.
Roo.