Which is clearly illegal (
Competition Act 1998 Sec2 etc), even accepting such terms equates to collusion in price maintenance.
It's a serious problem in UK retail and widespread, so I'm not criticising you but rather pointing out that many importers/wholesalers are distorting the market, the Edge seems to think it's the buyer's fault.
UK retailers costs are also high, but many also seem stuck to their old business model with in town locations etc. Solware by contrast have a small unit on a small industrial estate and pack it high sell it "cheap", good customer service and pricing mean they do well, although a quick browse of their website will show which uk importers are engaged in restrictive price maintenance.