When you say "Start offer with #XX, that usually means that you will sell it at that price, but are taking bids (people bid higher). Usually the "start offer" is the absolute lowest you'll sell the domain for.
Posting a starting offer in which you have no intention of selling it as isa little rude and will annoy several members. (I'll look the other way due to inexperience.

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You posted a BIN (Buy It Now) at $5,000, so then what is your real opening bid?