Items including an Auschwitz uniform have been found on sale on eBay.
The auction site has apologised and taken 30 items from sale after a Mail on Sunday investigation revealed the 'sick trade'.
It also made a £25,000 donation to charity.
Among the items was a uniform thought to have belonged to a Polish baker who died in Auschwitz, which was on sale for £11,200, it was reported.
It was being sold by a man named as Viktor Kempf, based in Ukraine.
The site apologised and said it had made a donation of £25,000 to charity.
Other items reported to be for sale included shoes and a toothbrush belonging to a death camp victim and Star of David armbands used to mark out Jews for persecution.
A spokesman for eBay said the items had been removed "in view of the seriousness of the issue".
In a statement eBay said: "We are very sorry that these items have been listed on eBay and we are removing them.
"We don't allow listings of this nature, and dedicate thousands of staff to policing our site and use the latest technology to detect items that shouldn't be for sale.
"We very much regret that we didn't live up to our own standards. We have made a donation to charity to reflect our concern."
Eva Clarke, 68, from Cambridge, who was born in a concentration camp in 1945 and lost 15 members of her family at
Auschwitz-Birkenau, told the Mail on Sunday: "I am at a loss for words how a mainstream site like eBay could profit from this.
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