My old EC vacuum pump has packed up so I am looking for a replacement. I am using a old CPS pump I had prior to the EC unit. It had packed up but since the EC unit bit the dust I had another look at it and the problem was that it had ingested resin! Cleaned it out and it now works fine but would like to have a spare.

The updated EC unit looks good but seems expensive at £276 when compared to offerings on ebay. Looking at one for £64, less than a 1/4 of the cost! It has a CFM of 4 whereas the EC pump is only 2.84.  Power is 0.19kw cheap v 0.15kw EC. The only advantage the EC offering has, as far as I can see, is an absolute vacuum of 99.98% compared to 99.95% for the cheap pump. Is this 0.03% significant for home use? Are there other advantages worth paying over £210 extra for?

Update. Just found one for £45! 2.5CFM and 5Pa vacuum.