There are two companies that go under the name of Eclipse. One in Surrey and the other in Coventry. The Coventry Eclipse seems to attract the complaints according to various websites.
I have purchased a number of small items, like memory chips, hard-drive, from the Coventry company. And to be fair, I have never had a problem with them, either with the products or delivery, price as been very favourable. Purchasing anything larger, would be a choice that only you can make, surely there must be alternatives available, if in doubt. Pay by credit card if you go ahead with a deal, then you will have extra protection if the case arises.