Just a data point.
I've found the seller, Lee to be honest, reliable and the kits are of reasonable standard - I've put 40 of them in a school.
Delivery time for these kits is quick - as the eBay listing says, they're held in Regent's Park, Sydney - 2 days.
Highly, highly recommend. (and no, not a paid ad or any commercial affiliation. Just a satisfied customer.)