How to spot an eBay Rip off

[crumpy]

I thought the parts i bought where to cheap.they arrived today,a polished alloy maggy with the kanji engraved cover cost $1.99.gold o ring 530 chain cost $7.99.fitted both today perfect fit post cost $45.00 from japan.all brand new.i did not think they would show up but it took 7 days to arrive.all parts brand new.Instead of looking up hayabusa i tried gsx1300r and there they where and still more available.Too cheap but good quality even come with allen bolts (imperial).sometimes theres good out comes, but i have been ripped off before.