Various signs point to no.
There's this pre-existing tidbit:
http://www.badbitcoin.org/thebadlist/Seems they've been around for a while but never bothered to fix their FAQ (the images still point to their old domain)
( Or their broken grammar, for that matter - for being based in London, that seems atrocious )
If you ever tried to go through checkout, you'll end up at
http://www.prestigescrow.com/new_order.php - which, surprise surprise, is no longer available.
Sooo... probably a scammy site, but it doesn't matter because you wouldn't be able to buy anything anyway?
( The supposed escrow site itself had some bad marks:
https://bitcointalk.org/index.php?topic=715698.0 )