The item is sold for $50. Period. Then you can accept (or not) 3 other offers. It is irrelevant if the$50 buyer is in $45 offers. May be he purchased again. The way to tell is to look at their IDs for one and when you accept offers you will see names and addresses and then you could contact the person buying 2 items one for 45 and other for 50 if they meant to buy 2. If such a case will show up to be a fact.
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If you consider it a sport to gather your food by drilling through 18
inches of ice and sitting there all day hoping that the food will swim by,
you might live in Michigan. Jeff Foxworthy.