This week we take a look at the best online marketplaces. I give my opinion on the four main sites for buying and selling and tell a few home truths about eBay's customer service.   

A list of the sites reviewed

 Catawiki          https://www.catawiki.com

Colnect            https://colnect.com/en/stamps

Delcampe         https://www.delcampe.net

eBay                https://www.ebay.co.uk

eBid                https://www.ebid.net

Hipstamp         https://www.hipstamp.com/

Stampworld      https://www.stampworld.com/en/