quote:
Is it risky to set lead time of 3s ...
No. AS allows it, and I haven’t seen any complaints about not-in-times for a VERY long time. If anything, since AS “adjusts” the lead time based on ebay’s current response time, it may go in earlier, as you experienced with your first snipe. Someone might post that they use something else (like 5 or 8), but they are only telling you their personal preference, and nothing scientific. If you like 3, then go with 3. I suspect 3 is a fairly popular setting.
quote:
Should I expect seller to give me feedback after I paid them or after I leave them feedback ?
In a perfect world, without misunderstandings, yes. But, sellers are concerned about getting bad feedback, so if you want it, it might be better to give it first.
